US Bridges

Research Avenue over Tributary to Patapsco Ri

FairPosted for load

Baltimore County, Maryland · 0.08 MI W of Hmds Fery RD · Structure no. 200000B-0322020

Built
1955
70 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
23 ft
Daily traffic
228
2024 count
Owner
County
County Highway Agency

About this bridge

Research Avenue over Tributary to Patapsco Ri is a concrete culvert carrying Research Avenue over Tributary to Patapsco Ri in Baltimore County, Maryland. It was built in 1955, so it is 70 years old, older 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. Its operating status is: posted for load restriction.

It carries about 228 vehicles a day, roughly 5% of them trucks, projected to reach 284 by 2046. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesResearch Avenue
CrossesTributary to Patapsco Ri
Location0.08 MI W of Hmds Fery RD
RouteCounty Highway 3245
CountyBaltimore County
StateMaryland
Coordinates39.23661, -76.66416
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.4 US tons
Inventory rating16.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic228 (2024)
Projected traffic284 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Research Avenue over Tributary to Patapsco Ri built?

It was built in 1955, making it 70 years old in 2025.

What condition is Research Avenue over Tributary to Patapsco Ri 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 July 2023.

How much traffic does Research Avenue over Tributary to Patapsco Ri carry?

About 228 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Research Avenue over Tributary to Patapsco Ri?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns Research Avenue over Tributary to Patapsco Ri?

It is owned by the County Highway Agency.