US Bridges

Pa Tpk (I-76) over T-477 Dunnings Cr.

Fair

Bedford County, Pennsylvania · East of Bedford · Structure no. 000000000004427

Built
1939
86 years old, rebuilt 1997
Condition
Fair
inspected August 2022
Type
Girder and Floorbeam System
Steel
Length
486 ft
6 main spans
Daily traffic
36,252
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over T-477 Dunnings Cr. is a steel girder and floorbeam system carrying Pa Tpk (I-76) over T-477 Dunnings Cr. in Bedford County, Pennsylvania. It was built in 1939 and reconstructed in 1997, so it is 86 years old, older than the Pennsylvania average of 54.8 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 36,252 vehicles a day, roughly 33% of them trucks, projected to reach 40,900 by 2030. The structure is 486 ft (148.1 m) long and 90 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesT-477 Dunnings Cr.
LocationEast of Bedford
RouteInterstate 70
CountyBedford County
StatePennsylvania
Coordinates40.01763, -78.47346
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2022
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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length486 ft (148.1 m)
Longest span96 ft (29.3 m)
Deck width90 ft (27.5 m)
Roadway width85 ft (25.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,252 (2004)
Projected traffic40,900 by 2030
Trucks33%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed5 mi (8 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Tpk (I-76) over T-477 Dunnings Cr. built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1997.

What condition is Pa Tpk (I-76) over T-477 Dunnings Cr. 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 2022.

How much traffic does Pa Tpk (I-76) over T-477 Dunnings Cr. carry?

About 36,252 vehicles per day (2004 count), of which roughly 33% are trucks.

How long is Pa Tpk (I-76) over T-477 Dunnings Cr.?

The structure is 486 ft (148.1 m) long with a longest span of 96 ft (29.3 m) and a deck 90 ft wide.

Who owns Pa Tpk (I-76) over T-477 Dunnings Cr.?

It is owned by the State Toll Authority.