US Bridges

US 40 Alt over Big Shade Run

Fair

Garrett County, Maryland · 0.62 Mile West of Md 669 · Structure no. 100000110006010

Built
1932
93 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
1,783
2009 count
Owner
State
State Highway Agency

About this bridge

US 40 Alt over Big Shade Run is a concrete tee beam carrying US 40 Alt over Big Shade Run in Garrett County, Maryland. It was built in 1932, so it is 93 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 5 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 1,783 vehicles a day, roughly 8% of them trucks, projected to reach 2,133 by 2026. The structure is 31 ft (9.4 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 40 Alt
CrossesBig Shade Run
Location0.62 Mile West of Md 669
RouteU.S. Route 40
CountyGarrett County
StateMaryland
Coordinates39.69573, -79.17216
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57 US tons
Inventory rating34.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,783 (2009)
Projected traffic2,133 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$89,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 40 Alt over Big Shade Run built?

It was built in 1932, making it 93 years old in 2025.

What condition is US 40 Alt over Big Shade Run 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 August 2024.

How much traffic does US 40 Alt over Big Shade Run carry?

About 1,783 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 40 Alt over Big Shade Run?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 44 ft wide.

Who owns US 40 Alt over Big Shade Run?

It is owned by the State Highway Agency.