I was here to look at the bridge, so I wanted to avoid the $2 per person entrance fee. I parked just before the ticket booth and walked up towards the bridge. The sandy shore along the river looked inviting on this warm August day and I could hear the delighted screams of young people who were playing down there by the water. I was here to take pictures though, so I walked closer to the bridge, carefully watching for traffic. The road was very busy with cars coming and going, but thankfully everyone was courteous and took their time passing me. It was a nice time of day, with the lowering sun causing interesting shadows on the bridge and sparkles glistening on the water below it. The only disappointment for me was that the informational signs about the bridge that used to be near the ranger station are no longer there. I intentionally looked for them and knew where they had been because of a description about them that I read for a virtual geocache, which is here. Also, there is a pokestop here that shows a photo of the signs and where they were in relation to the ticket booth/ranger station. I hope that this is only temporary and that the signs will soon be replaced with new ones so that others may learn about the history of this old, but really cool (and still functioning) railroad bridge. I saw two trains cross over the bridge in the short time that I was there. Pretty exciting!

Old stone bridge that can be seen in many places. Not that unique in design or impressive. It is the first things to see when you enter the park. There is no parking next to it.

Instead of entering Patapsco State Park (right turn off of Rt. 1 coming south from I-195, then left on Park Entrance Road) where you have to pay the fee and only see a small part of the viaduct (there's no parking right at the viaduct and not much of it to see), you're better off continuing south on Rt 1 over the Patapsco River and then turning right onto Levering Avenue. If you follow Levering Avenue a short distance, it passes under one of the viaduct spans and you will see some limited roadside parking (maybe enough for 5-10 cars) where you can stop, get out, and get good pictures. To get some of the best photos, you have to cross the road and walk through some rather marshy ground underneath one of the viaduct spans to the riverside. Great visit!

Unique bridge in an unsuspecting area. I think this area in late Spring / early Fall would provide the best scenery for photographs

Built in 1835 by the Baltimore & Ohio RR and still used today by CSX. Worlds oldest multiple stone arched railroad bridge. No trespassing!

The park this is located in is pretty and offers a many walking trails. The monument itself is not easy to access

This a great example of a stone arch train bridge. It was the first one that wasn't straight. It has a curve which was needed for the location but also provide extra stability. The bridge crosses the river and what is now a state park so you can see it from below, surrounded by nature much as it would have been soon after it was built. It was an extra treat for a train to cross it while I was there.

This is amazing to see up close, from underneath, and up at the top. An amazing engineering accomplishment predating the Civil War, and still being used today.

Don't go to the top, or to the monument as that is trespassing, and the neighbors will call the cops on you, and you could be arrested. Ah, history.

Nice park and nice bridge. Its a historic bridge which is still used today. It's privately owned by the railroad so be careful if you plan on trespassing. The monument is small and hard to access.

Nice old style stone arch bridge. Built so well over a century ago that we saw a full size train go over with two huge diesel 🚂. Cool!

Lucky to see a train crossing ;)

Beautiful day and the park was grand! Wishing I had brought swim shoes so I could stroll in the water. Looking forward to a another trip to explore the trails.

An amazing structure built back in the early days of railroad. You can still go over it on the MARC train from the inner harbor.. a true experience

Amazing structure

Best viaduct in town!

so big! but was disappointed that so much of it was obscured by trees. it also was not well- marked as a historic site.

Nothing to see. Just an old bridge.

Beautiful historical Architecture and great place hike!

Great local fishing spot for sunfish plus hiking in the Patapsco State Park.

Great spot to catch Csx trains on the capital subdivision. Also it's not far to the Marc saint Dennis train station where Csx also passes by.

I like this school...🤩🤪😂😂

Good fishing hole!... js

Awesome hike spot super close to Baltimore

Passing by while cycling in Patapsco. Trails are closed still due to damage from rain and flooding :(

Interesting historic stone arches.

What a thing of engineering beauty.

Wish the railroads would clean grafitti from the monument and have a historical sign.

I born and raised in Relay. Arlington Avenue.

Nice place to walk 😀

Brian FBI

Great trails.

Built around the time the railroad was considering steam engines to replace horses. In daily use for commuter and heavy freight. When E.F. Baldwin's father sent him to Europe to study architecture, he studied cathedrals. His bridges and stations look that way. He also did the marc station in Laurel.

Great picnic and playground. Room to walk and close to river

Great trails and great pics for railfans.

Work right by this nice veiw

Beautiful views. Relatively easy hiking unless you choose otherwise. Beautiful place to visit

Thomas Viaduct is a very picturesque structure!