US Bridges

Md 946 over US 40 Alt

Fair

Garrett County, Maryland · 0.46 Mile South of Md 546 · Structure no. 100000110026010

Built
1956
69 years old, rebuilt 1987
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
174 ft
3 main spans
Daily traffic
760
2009 count
Owner
State
State Highway Agency

About this bridge

Md 946 over US 40 Alt is a steel continuous stringer/multi-beam or girder carrying Md 946 over US 40 Alt in Garrett County, Maryland. It was built in 1956 and reconstructed in 1987, so it is 69 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 760 vehicles a day, roughly 8% of them trucks, projected to reach 934 by 2026. The structure is 174 ft (53 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMd 946
CrossesUS 40 Alt
Location0.46 Mile South of Md 546
RouteState Highway 946
Coordinates39.68319, -78.96719
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81.5 US tons
Inventory rating48.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53 m)
Longest span65 ft (19.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic760 (2009)
Projected traffic934 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 946 over US 40 Alt built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1987.

What condition is Md 946 over US 40 Alt 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 Md 946 over US 40 Alt carry?

About 760 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 946 over US 40 Alt?

The structure is 174 ft (53 m) long with a longest span of 65 ft (19.8 m) and a deck 35 ft wide.

Who owns Md 946 over US 40 Alt?

It is owned by the State Highway Agency.