US Bridges

US 13 NB over Back Creek

Fair

Somerset County, Maryland · 0.19 Mile South of Md 413 · Structure no. 100000190016011

Built
1934
91 years old, rebuilt 1964
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
28 ft
2 main spans
Daily traffic
13,630
2009 count
Owner
State
State Highway Agency

About this bridge

US 13 NB over Back Creek is a concrete slab carrying US 13 NB over Back Creek in Somerset County, Maryland. It was built in 1934 and reconstructed in 1964, so it is 91 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 13,630 vehicles a day, roughly 8% of them trucks, projected to reach 7,807 by 2026. The structure is 28 ft (8.5 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 13 NB
CrossesBack Creek
Location0.19 Mile South of Md 413
RouteU.S. Route 13
CountySomerset County
StateMaryland
Coordinates38.13355, -75.69962
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span14 ft (4.3 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,630 (2009)
Projected traffic7,807 by 2026
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 13 NB over Back Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1964.

What condition is US 13 NB over Back Creek 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 US 13 NB over Back Creek carry?

About 13,630 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 13 NB over Back Creek?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m) and a deck 41 ft wide.

Who owns US 13 NB over Back Creek?

It is owned by the State Highway Agency.