US Bridges

Gwynnbrook Avenue over Roaches Run

Good

Baltimore County, Maryland · 0.38 MI E of Md 140 · Structure no. 200000B-0154010

Built
1976
49 years old
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
2 main spans
Daily traffic
4,304
2022 count
Owner
County
County Highway Agency

About this bridge

Gwynnbrook Avenue over Roaches Run is a prestressed concrete box beam or girders - multiple carrying Gwynnbrook Avenue over Roaches Run in Baltimore County, Maryland. It was built in 1976, so it is 49 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,304 vehicles a day, roughly 5% of them trucks, projected to reach 5,928 by 2042. The structure is 65 ft (19.8 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesGwynnbrook Avenue
CrossesRoaches Run
Location0.38 MI E of Md 140
RouteCounty Highway 587
Coordinates39.43614, -76.79149
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.5 US tons
Inventory rating46.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length65 ft (19.8 m)
Longest span31 ft (9.4 m)
Deck width37 ft (11.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,304 (2022)
Projected traffic5,928 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Gwynnbrook Avenue over Roaches Run built?

It was built in 1976, making it 49 years old in 2025.

What condition is Gwynnbrook Avenue over Roaches Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does Gwynnbrook Avenue over Roaches Run carry?

About 4,304 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Gwynnbrook Avenue over Roaches Run?

The structure is 65 ft (19.8 m) long with a longest span of 31 ft (9.4 m) and a deck 37 ft wide.

Who owns Gwynnbrook Avenue over Roaches Run?

It is owned by the County Highway Agency.