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Madeleine Bonsma-Fisher, PhD

@mbonsma.bsky.social
14K followers 1.9K following 2.6K posts

Transportation data scientist at the University of Toronto, physicist at heart. I post about bikes and safe streets, local politics, and sometimes science. She/her.

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Reposted by Madeleine Bonsma-Fisher, PhD
Peter Flax @pflax1.bsky.social · 7h
For the most part, driving is super inefficient but at least it's really expensive and also quite dangerous.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 30/09/2026
Yesterday I had a meeting in deep Mississauga. 50 minutes by car or 90 minutes by transit with at least two transfers. Since I don't have a car, I did a compromise: subway all the way to the end of the line, then a taxi: $30 and 70 minutes total. #WeekWithoutDriving
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 29/09/2026
I put mashed potatoes in the waffle maker
Some mashed potatoes recently placed in a small round waffle makerA crispy golden potato waffle
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Reposted by Madeleine Bonsma-Fisher, PhD
Canada's National Observer @nationalobserver.com · 28/09/2026
This morning — following two investigations into Toronto mayoral candidate Brad Bradford's use of an app that rewards supporters for posting AI-generated comments and sharing contacts — Bradford called our reporting "inaccurate." We're now releasing the recording that proves our reporting.
nationalobserver.com
Bradford calls CNO reporting of AI app rewards ‘inaccurate.’ Here’s the recording proving our reporting.
Canada’s National Observer has decided to publish the segment of the Zoom call that corroborates its reporting.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 27/09/2026
Someone actually did!! (Seen in Beaches-East York)
A lawn sign in Brad Bradford's former warn that says "BRADFORD BYPASS COMING SOON"
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 27/09/2026
First time riding in it, car parked in the bike lane 🫠
A van parked in an unprotected section of new cycle track on Danforth
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Reposted by Madeleine Bonsma-Fisher, PhD
Michelle @michelle-colleen.bsky.social · 26/09/2026
Impressive turnout at #criticalmass #bikeTO to show our opposition to Doug Ford's plan to rip out bike lanes & endanger our lives. Bike lanes save lives! Doug Ford is a corrupt animal. Shame on him! #cycling #visionzero #toronto #ONpoli #TOpoli
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 26/09/2026
New permanent cycle track on Danforth 😍 #BikeTO #TOphoto
A raised protected cycle track just finished construction on Danforth Ave East of MainA raised protected cycle track just finished construction on Danforth Ave East of Main with a large buffer zone and curb extensions
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Reposted by Madeleine Bonsma-Fisher, PhD
David Coletto @davidcoletto.bsky.social · 25/09/2026
The politics around bike lanes may be heated. But the broader public view on road safety is not. 86% of Ontarians say roads should be designed to be safe for everyone. And 72% say proper cycling infrastructure makes roads safer for all road users. sharetheroad.ca/news/64-of-...
sharetheroad.ca
64% of Ontarians Say Municipalities, Not Queen’s Park, Should Decide on Local Bike Lanes - Share the Road Cycling Coalition
64% of Ontarians Say Municipalities, Not Queen's Park, Should Decide on Local Bike Lanes New provincial poll finds support for local decision-making in every region of Ontario,while support for safer road infrastructure for everyone who uses them remains strong TORONTO, September 23, 2026 – A new Abacus Data survey commissioned by the Share the RoadCycling
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 21/09/2026
About to enter a period I like to call "living like a professor" where every activity is stacked so tightly that I have mere hours to prepare for each next thing and success is balanced on the edge of a knife
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 20/09/2026
In a massive dataset of over 10,000 cities around the world, the strongest association with distance travelled by cycling was not climate, topography, or even infrastructure - it was *gasoline prices* doi.org/10.1073/pnas...
Figure 3 from "Global health and climate benefits from walking and cycling infrastructure" by Adam Millard-Balla, Monisha Reginalda, Yasmina Yusufa, and Christopher Bian. The figure shows factors associated with distance travelled by cycling and walking, arranged in order of effect size. For cycling, the largest effects are gasoline prices, GDP per capita, rail service, steep terrain (negative effect), minimum temperature (negative effect), population density, and bicycle lanes. For walking, the largest effects are population density, gasoline prices, bicycle lanes, and maximum temp (negative effect).

Fig. 3 Caption: Factors influencing active travel. Each coefficient represents the impact of a one-SD change in each variable on the share of kilometers traveled by cycling (A) and walking (B). For each city-level variable such as density, the model estimates a separate coefficient for each country. The shaded area shows the distribution of country-level coefficients; for density, for example, the effect on walking ranges from about zero to ~0.11, excluding one outlier. For country-level variables such as gasoline prices, there is only a single coefficient. Variables are ordered by the size of their absolute effect in the median country—density and gasoline prices have the greatest impact on walking and gasoline prices and income (GDP per capita) on cycling. The minimum temperature variable shows the marginal effect of both the linear and squared terms.One might expect climate to have a major impact on active travel, and many studies highlight the impact of weather on daily and seasonal travel decisions (9, 25). However, in our model, there is a negligible association between precipitation and the mode shares of walking and cycling. Hotter temperatures decrease walking but have no effect on travel by bicycle. Colder temperatures only reduce walking and cycling in colder climates (SI Appendix for further Discussion). At the national level, gasoline price has the largest association with the share of travel by active modes. A one-SD increase in the price per liter (equivalent to US $0.40) is associated with a ~1.0 percentage point increase in walking and a ~0.5 percentage point increase in cycling—notable given that the mode share of cycling across the entire dataset is just ~0.9%. These findings echo a large volume of research that shows how vehicle travel declines in line with rising fuel prices (26). Gasoline prices also have an indirect effect in promoting denser, mixed-use development (27).
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 19/09/2026
Ten years ago I lived in an apartment in the west end with a spectacular view. I took a million photos. It's amazing how the same scene can look so different from hour to hour and day to day. #TOphoto
The Toronto skyline silhouetted against clouds and the sunriseMoonrise over the CN tower and downtown The CN tower peeks through low clouds The CN tower illuminated by low sun at sunset in front of pink and blue clouds
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Reposted by Madeleine Bonsma-Fisher, PhD
Glendon Mellow @flyingtrilobite.com · 18/09/2026
Welcome to the #TOphoto Feed! Photography of Toronto, Canada. Currently an open Feed: use hashtag #TOPhoto for your work to appear. 🦝 No AI 🦝 SFW, please 🦝 Use Alt text 📸 Let's see your best photos 📸 Tap the 3 dots at top-right to Like and Pin the Feed 📸 bsky.app/profile/flyi...
An early morning photo of the lyrical white and red Cherry Bridge on Cherry Street, from when Biidaasige Park was under construction. The dark blue water is still and an almost perfect reflection of the bridge can be seen. I am not a professional. iPhone 11 Pro.
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Reposted by Madeleine Bonsma-Fisher, PhD
Robert Zaichkowski @rzaichkowski.bsky.social · 15/09/2026
Today's @thestar.com column by @graphicmatt.com calls out both Olivia Chow's and Brad Bradford's respective focus on affordability and safety as being out of line with what #TTC riders truly want which is better service. #TOpoli www.thestar.com/opinion/cont...
thestar.com
Matt Elliott: Why are Olivia Chow and Brad Bradford ignoring what Toronto TTC riders actually want?
A Liaison Strategies poll of 1,000 Toronto residents reveals 52 per cent want better TTC service, not just fare freezes or more police.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 18/09/2026
People change, you just need to find someone who will change WITH you. Happy 10 years, Kent!
Me and my husband on our wedding day in front of a pink and white classic Ford carMe, my husband, and toddler in a park with a cargo bike and road bikeMe, my husband, and two kids with our two cargo bikes
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 17/09/2026
When I had a physics email I would get emails like this all the time
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Reposted by Madeleine Bonsma-Fisher, PhD
Emily @allweeksend.com · 16/09/2026
Hi, do you bike with kids on a cargo/family bike in the winter? I’d love to update my winter bike clothing guide to mention this but don’t have kids, so I’m soliciting help! Please let me know if you’d be willing to provide some perspective/experience and I’m happy to credit you on the guide.
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Reposted by Madeleine Bonsma-Fisher, PhD
Bunch Bikes @bunchbike.com · 15/09/2026
Can confirm! I used to really struggle anytime a kid was crying/screaming in the bike - I felt like a bad advocate. But over time I came to see this as integral to what we mean when we say that biking & walking place us in community
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 15/09/2026
A popular Toronto-based travel influencer posted an Instagram video and blog about how they replaced car trips with an e-cargo bike and how much they love it. This feels like an indication of big culture shifts - biking is really going mainstream in Toronto!
minijetsetter.com
Urban Arrow FamilyNext Pro Review: Our Family Cargo Bike - Mini Jetsetter
Our honest Urban Arrow FamilyNext Pro review after a summer of daily riding in Toronto: what we love, what to know, and if a family cargo bike is worth it.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 15/09/2026
Not to mention that in places with a bikeway, bikes are easily approaching and exceeding car volumes. It's a very efficient use of road space.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 15/09/2026
"more european than ever before" i shout into car windows while riding two abreast down a cycle track
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Reposted by Madeleine Bonsma-Fisher, PhD
Matt Elliott @graphicmatt.com · 14/09/2026
Check your inbox: it’s City Hall Watcher #401! It’s got the launch of another new election feature: Lobbying Report Cards. Find out who your councillor has been hearing from Plus: Intersection Inspection looks at Mill & Cherry, Candidate Chaos, and more! toronto.cityhallwatcher.com/p/issuing-lo...
toronto.cityhallwatcher.com
Issuing lobbying report cards at the end of the term
City Hall Watcher #401: Handing out a Lobbying Report Card for every councillor, plus the return of Intersection Inspection and more CANDIDATE CHAOS
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 15/09/2026
This is actually wild. People were turning stop signs into "STOP HARPER" signs all over the country. There was a mass mobilization to oust him, people voting strategically to elect Trudeau, and this is what we get??
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Reposted by Madeleine Bonsma-Fisher, PhD
Clare Blackwood @clareblackwood.bsky.social · 14/09/2026
"Not taking sides" when it comes to speaking out about genocide is indeed taking a side, Ed Sheeran, but I think you probably already know that.
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Reposted by Madeleine Bonsma-Fisher, PhD
Kristie @knairn.bsky.social · 15/09/2026
September baseball baby
Larry David “fuck you and I’ll see you tomorrow”
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Reposted by Madeleine Bonsma-Fisher, PhD
Asher @skydome.bsky.social · 15/09/2026
Why do I want an extra month of this bullshit??
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 14/09/2026
Explained a little bit about externalities to my 6-year-old and now he is full of ideas for how to change incentives to get desired outcomes. He has reinvented green technology rebates, congestion pricing, parking reform, all manner of progressive taxes. These ideas ARE common sense.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 14/09/2026
Unfortunately revisions mean I must go through this emotional cycle multiple times
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Reposted by Madeleine Bonsma-Fisher, PhD
John Michael McGrath @jm-mcgrath.bsky.social · 14/09/2026
"The self-response rate also reached a new record of 91.2%." oh my homeland, my beloved nation of dork keeners, I love you so much
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Reposted by Madeleine Bonsma-Fisher, PhD
Robert Zaichkowski @rzaichkowski.bsky.social · 11/09/2026
Glad to see @cycletoronto.bsky.social finally took a page from #NoJetsTO in making lawn signs so residents can show their support for bike lanes. Hope we get a lot of uptake in Scarborough, North York, and Etobicoke where the message is needed most. #BikeTO #TOpoli #VisionZero www.cycleto.ca/sign
cycleto.ca
Request a Lawn Sign
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 11/09/2026
Endless public consultations for a single road redesign, but this
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 08/09/2026
Cool bike trip alert! 🚨 My friend Mathilde sent me a lovely account of her family's bike trip around Lac Saint-Jean in Québec to share with you all. I'll be posting her photos and description of the trip in this thread.
One of the "bienvenue aux cyclistes" campsites on the Lac Saint Jean route showing a beautiful view of the water through treesA cute ready-to-camp small cabin along the Lac Saint Jean bike route Mathilde and her daughter on a red sand beach on Lac Saint Jean
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Reposted by Madeleine Bonsma-Fisher, PhD
Kelli Refer @kellireef.bsky.social · 07/09/2026
New rule: All transit planners must walk to bus stops with whiny children. Same requirement for transfers. We aren’t sending the well-behaved, “I’ll read my book” kids either. We are going to send the feral, “can I jump off this?” Kids. Or siblings who are fighting, that could work, too.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 07/09/2026
We're gonna need a bigger turn box
A group of 8 cyclists waiting to turn left at a two-stage turn on a newly built cycle track on Cherry St. The green turn box is full and people are waiting off to the side also
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 07/09/2026
One of our neighbours, who knows we don't have a car, just told my toddler that a car is "like your bike, but for grown-ups" lmao
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 07/09/2026
We'll fix it in post
A pair of colour work mittens where one says "CARS" and the other says "SUCK". The CARS mitten is noticeably smaller than the SUCK mittenThe CARS SUCK mittens being blocked after which they will hopefully be closer to the same size
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Reposted by Madeleine Bonsma-Fisher, PhD
Cloe Logan @cloelogan.bsky.social · 02/09/2026
The Ford government says bike lanes in Toronto don't belong on main streets. But experts (along with documents from the City of Toronto) say that a cycling network purely on secondary routes doesn't work in the city. Here's why:
nationalobserver.com
Ford's bike lane removal likely to make Toronto traffic worse, more dangerous: analysis
A clearer picture of Toronto’s cycling network, shaped by expert interviews and a Canada’s National Observer analysis of City of Toronto documents, suggests the Ford government’s move to rip bike lane...
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 04/09/2026
As long as the bikes lanes are there for Doug and his friends to look at, they will continue to feel that something that's theirs by right has been taken from them and act accordingly
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Reposted by Madeleine Bonsma-Fisher, PhD
Shawn Micallef @shawnmicallef.bsky.social · 04/09/2026
It’s pure culture war hostility, Jake. www.thestar.com/news/gta/dou...
thestar.com
Doug Ford’s government rejected Toronto’s proposals to restore traffic lanes and keep bike lanes: sources
Toronto Mayor Olivia Chow says the province walked away from compromises to restore traffic lanes while keeping bike lanes on major streets.
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 03/09/2026
Anyone else feeling like this week is a bonus week between August and September? Labour Day is late this year and school doesn't start until next week but August is already over and we have this weird extra week
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 03/09/2026
I finished (!!!) a major draft today and the dopamine hit is unreal
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 03/09/2026
The highest high: paper is finished The lowest low: paper is 90% finished
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 03/09/2026
We're building bike lanes in Bradford's backyard, bitch
Danforth permanent bike lane under construction in Ward 19 Beaches-East York. So beautiful.
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Reposted by Madeleine Bonsma-Fisher, PhD
How-Sen Chong @how-sen.com · 02/09/2026
Yesterday Doug Ford did three things that will make congestion around Toronto much, much worse. First, Ford has made made massive cuts to GO Train service on the Lakeshore West, Lakeshore East, Barrie and Stouffville lines. In some cases, GO Train frequency will drop from 15 trains a day to 4 ->
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Reposted by Madeleine Bonsma-Fisher, PhD
Tom Flood @tomflood.bsky.social · 01/09/2026
The Fight For Safe Streets. Thank you to everyone who came out and everyone who shared footage of this incredible protest ride. @thebikinglawyer.bsky.social @cycletoronto.bsky.social @lanrickbennett.bsky.social
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 01/09/2026
OMG, we did! Incredible photos by Richard Seck: www.richardseck.com/criticalmass...
A photo by Richard Seck of Friday's critical mass bike ride in Toronto showing the Bloor Viaduct bridge packed with people on bikes from end to end
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 01/09/2026
Won't somebody think of the drivers 🥺
A Facebook group called "Toronto Car People" with 6.1k members. The banner image is a photo of a congested highway in Toronto wirh the text "Keep Toronto traffic moving. Cars, taxis, buses, delivery vans and ambulances need room to move around the City."

"About this group

Toronto has an abundance of pressure groups favouring cyclists and pedestrians, but none that will speak for (by far) the largest group of transportation users: drivers and their passengers. Our Group [sic] does not share the "cars versus people" mentality. Drivers, it should be remembered, are people too ... at times we are pedestrians and cyclists, even. With this in mind, argumentative posts and uncivil posts will be deleted."The start of a long and unhinged post in the group from James:

"I just sent this email to 311 since I didn't have any luck emailing Councillor Rachel Chernos Lin about it, and I would encourage the rest of you to do the same so we can win this battle once and for all:

Hello:

It has come to my attention that the speed limit on the Leaside Bridge is way too low. 

As I'm sure you know, it used to be 60 km/h a long time ago, and then it was lowered to 50, and now it's 40. 

I understand that the city planned for this all along when it was planning to modify the bridge for road safety improvements, but this was absolutely not an improvement and was absolutely not necessary.

To start off, one of the improvements made to the bridge was adding metal and concrete..."
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Reposted by Madeleine Bonsma-Fisher, PhD
Alanna dB @whoalansi.bsky.social · 31/08/2026
The main thing that I try to keep in mind when I'm debating not riding my bike (because of theft or winter damage or whatever) is that I bought it to replace my car. The point is to ride it. & while that doesn't mean I have to ride it no matter what, it does kind of help remind me not to be too...
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Reposted by Madeleine Bonsma-Fisher, PhD
Damien Moule @damienmoule.bsky.social · 06/07/2026
Since the last municipal election, I saved up $1,200 to donate to candidates this election. Here is a🧵that goes through my decision making process and hopefully serves as a donation guide to you if you're thinking about donating (which I hope you do as you can have a disproportionate impact) 1/
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Madeleine Bonsma-Fisher, PhD @mbonsma.bsky.social · 31/08/2026
A few days ago my 6-year-old biked over 8 km from our home to a park. Our route was 100% on protected cycle tracks, calm side streets, and off-road paths, and it was even pretty direct. I'm grateful for everything Toronto has done to make this possible! (Photo from a different day but same route)
Husband and kid biking over one of the Portlands bridges on a protected cycle track
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