US Bridges

Clayton Road over Mountain Branch

Fair

Harford County, Maryland · 0.3 Miles W of Singer RD · Structure no. 200000H-0200030

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Culvert
Steel
Length
22 ft
Daily traffic
766
2020 count
Owner
County
County Highway Agency

About this bridge

Clayton Road over Mountain Branch is a steel culvert carrying Clayton Road over Mountain Branch in Harford County, Maryland. It was built in 1970, so it is 55 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.

It carries about 766 vehicles a day, roughly 5% of them trucks, projected to reach 843 by 2040. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesClayton Road
CrossesMountain Branch
Location0.3 Miles W of Singer RD
RouteCounty Highway 283
CountyHarford County
StateMaryland
Coordinates39.47249, -76.3501
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 alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans0
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic766 (2020)
Projected traffic843 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Clayton Road over Mountain Branch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Clayton Road over Mountain Branch 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 Clayton Road over Mountain Branch carry?

About 766 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Clayton Road over Mountain Branch?

The structure is 22 ft (6.7 m) long with a longest span of 6 ft (1.8 m).

Who owns Clayton Road over Mountain Branch?

It is owned by the County Highway Agency.