Patapsco Valley State Park
Maryland’s Oldest State Park
Patapsco Valley State Park extends 32 miles along the Patapsco River, offering a green escape near Baltimore. Established in 1907, it’s famous for its rushing river, historic ruins, and the iconic Swinging Bridge. With over 200 miles of trails, it’s a haven for hikers and mountain bikers.
🚧 2025 Camping Update: The Hollofield Area campground is CLOSED for renovations for the entire 2025 season. Camping is available at the Hilton Area (reservations highly recommended).
Trails & Hiking
The park is a regional destination for trail users. The diverse terrain ranges from flat river walks to steep valley climbs.
| Trail | Area | Highlights |
|---|---|---|
| Grist Mill Trail | Avalon/Orange Grove | Paved, follows river, leads to Swinging Bridge |
| Cascade Falls Loop | Avalon | Scenic waterfalls, moderate hike |
| McKeldin Rapids | McKeldin | Views of the river rapids and rocky gorges |
| Morning Choice | Rockburn Branch | Popular for mountain biking |
The Swinging Bridge
Located in the Orange Grove Area, the suspension bridge spans the Patapsco River and is a favorite photo spot. It connects the Grist Mill Trail to the Cascade Falls trail system.
History & Ruins
The park is dotted with remnants of its industrial past:
- Thomas Viaduct: The world’s oldest multiple-arched stone railroad bridge (visible from the Avalon area).
- Bloede Dam: (Removed in 2019) Formerly the site of the first underwater hydroelectric plant; the river now flows freely here for the first time in a century.
- St. Mary’s College Ruins: Stone arches and walls hidden in the forest near the Ilchester area.
Camping
Due to Hollofield’s closure, the Hilton Area is the primary campground for 2025.
- Sites: Non-electric tent sites and mini-cabins.
- Atmosphere: Wooded, family-friendly, near tires playground.
- Reservations: Essential due to reduced park capacity this year.
Is swimming allowed in the river?
Swimming is generally not recommended due to swift currents, sharp rocks, and drop-offs. There are no lifeguards. “Wading” is common, but exercise extreme caution.
Are there entrance fees?
Yes, day-use service charges apply. Fees vary by area (Avalon/Glen Artney/McKeldin) and residency (MD residents pay less). Weekends and holidays often see the park reach capacity early.
Can I fly a drone?
Drone use is restricted and typically requires a permit. Check with park headquarters for the latest regulations before flying.
