Patapsco Valley State Park — Avalon
The Avalon approach opens a historic river valley of trails, mill remains, and a swinging bridge toward Orange Grove.
Artwork inspired by Francis Guy
Patapsco Valley State Park runs through distinct areas along the river; Avalon is one practical beginning, not a pin representing all 32 miles. Paths connect recreation with traces of rail, mills, and other industry that occupied the valley. The suspended pedestrian bridge at Orange Grove is a destination in its own right, and the river’s bends make an urban outing feel expansive.
Begin with a chosen area and trail surface. Hiking routes vary in length and share sections with cyclists or riders, while floods can alter access. The valley’s industrial past is more than ruins: work, transport, water power, and destructive floods shaped what remains. Arrive early on busy weekends, when developed areas may close after filling.
- Park corridor
- 32 river miles
- Historic thread
- Mills and rail
- Nearby landmark
- Orange Grove swinging bridge
Quick guide
- Choose Avalon
- Patapsco has multiple entrances miles apart.
- Check river conditions
- Flood damage or high water can change a planned bridge walk.
Know before you go
- Trace the industry
- Look for rail alignments and mill remains without entering unstable ruins.
- Share the path
- Watch for cyclists and riders on multi-use segments.
- Respect closures
- A river valley changes quickly after hard rain.
- Arrive early
- Popular areas fill on warm weekends.
Good to know
The Avalon/Orange Grove entrance is not the park headquarters address. Google’s reviewed Avalon place and the operator’s 5120 South Street approach are the correct visitor location.
Notice these
- Patapsco River bends
- Suspension bridge
- Wooded former mill corridor