US Bridges

Silver Spring Road over Tributary to White Marsh

Fair

Baltimore County, Maryland · .01 M E of Perry Hall Blv · Structure no. 200000B-0412020

Built
1991
34 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
28 ft
Daily traffic
9,324
2022 count
Owner
County
County Highway Agency

About this bridge

Silver Spring Road over Tributary to White Marsh is a concrete culvert carrying Silver Spring Road over Tributary to White Marsh in Baltimore County, Maryland. It was built in 1991, so it is 34 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 9,324 vehicles a day, roughly 5% of them trucks, projected to reach 14,415 by 2044. The structure is 28 ft (8.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSilver Spring Road
CrossesTributary to White Marsh
Location.01 M E of Perry Hall Blv
RouteCounty Highway 4090
CountyBaltimore County
StateMaryland
Coordinates39.38734, -76.46909
Functional classRural 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 statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadHS 20
Structure length28 ft (8.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,324 (2022)
Projected traffic14,415 by 2044
Trucks5%
Lanes on structure5
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 Silver Spring Road over Tributary to White Marsh built?

It was built in 1991, making it 34 years old in 2025.

What condition is Silver Spring Road over Tributary to White Marsh 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 Silver Spring Road over Tributary to White Marsh carry?

About 9,324 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Silver Spring Road over Tributary to White Marsh?

The structure is 28 ft (8.6 m) long with a longest span of 8 ft (2.4 m).

Who owns Silver Spring Road over Tributary to White Marsh?

It is owned by the County Highway Agency.