US Bridges

Stoney Run Road over Md 170 / AMTRAK

Fair

Anne Arundel County, Maryland · 0.9 MI South of I-195 · Structure no. 200000AA5012010

Built
1982
43 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
428 ft
4 main spans
Daily traffic
5,164
2022 count
Owner
County
County Highway Agency

About this bridge

Stoney Run Road over Md 170 / AMTRAK is a steel continuous stringer/multi-beam or girder carrying Stoney Run Road over Md 170 / AMTRAK in Anne Arundel County, Maryland. It was built in 1982, so it is 43 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,164 vehicles a day, roughly 6% of them trucks, projected to reach 6,000 by 2046. The structure is 428 ft (130.4 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesStoney Run Road
CrossesMd 170 / AMTRAK
Location0.9 MI South of I-195
RouteCounty Highway 573
CountyAnne Arundel County
StateMaryland
Coordinates39.17817, -76.69264
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length428 ft (130.4 m)
Longest span108 ft (32.9 m)
Deck width65 ft (19.9 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,164 (2022)
Projected traffic6,000 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Stoney Run Road over Md 170 / AMTRAK built?

It was built in 1982, making it 43 years old in 2025.

What condition is Stoney Run Road over Md 170 / AMTRAK in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Stoney Run Road over Md 170 / AMTRAK carry?

About 5,164 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Stoney Run Road over Md 170 / AMTRAK?

The structure is 428 ft (130.4 m) long with a longest span of 108 ft (32.9 m) and a deck 65 ft wide.

Who owns Stoney Run Road over Md 170 / AMTRAK?

It is owned by the County Highway Agency.