US Bridges

Pa Tpk (I-76) over Back & Center Creek

Fair

Cumberland County, Pennsylvania · Upper Mifflin Twp · Structure no. 000000000013985

Built
1938
87 years old, rebuilt 2009
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
39 ft
1 main span
Daily traffic
21,102
2001 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Back & Center Creek is a concrete culvert carrying Pa Tpk (I-76) over Back & Center Creek in Cumberland County, Pennsylvania. It was built in 1938 and reconstructed in 2009, so it is 87 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 21,102 vehicles a day, roughly 38% of them trucks, projected to reach 23,285 by 2030. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesBack & Center Creek
LocationUpper Mifflin Twp
RouteInterstate 76
CountyCumberland County
StatePennsylvania
Coordinates40.19433, -77.42415
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,102 (2001)
Projected traffic23,285 by 2030
Trucks38%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$406,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Tpk (I-76) over Back & Center Creek built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 2009.

What condition is Pa Tpk (I-76) over Back & Center 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 January 2023.

How much traffic does Pa Tpk (I-76) over Back & Center Creek carry?

About 21,102 vehicles per day (2001 count), of which roughly 38% are trucks.

How long is Pa Tpk (I-76) over Back & Center Creek?

The structure is 39 ft (11.9 m) long with a longest span of 28 ft (8.5 m).

Who owns Pa Tpk (I-76) over Back & Center Creek?

It is owned by the State Toll Authority.