US Bridges

Pa Tpk (I-76) over Mt. Rock Spring Creek

Good

Cumberland County, Pennsylvania · West Pennsboro Twp. · Structure no. 000000000047748

Built
2012
13 years old
Condition
Good
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
21,474
2010 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Mt. Rock Spring Creek is a prestressed concrete box beam or girders - multiple carrying Pa Tpk (I-76) over Mt. Rock Spring Creek in Cumberland County, Pennsylvania. It was built in 2012, so it is 13 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 21,474 vehicles a day, roughly 31% of them trucks, projected to reach 22,983 by 2030. The structure is 67 ft (20.4 m) long and 121 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesPa Tpk (I-76)
CrossesMt. Rock Spring Creek
LocationWest Pennsboro Twp.
RouteInterstate 76
Coordinates40.20509, -77.30663
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length67 ft (20.4 m)
Longest span65 ft (19.8 m)
Deck width121 ft (37 m)
Roadway width113 ft (34.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,474 (2010)
Projected traffic22,983 by 2030
Trucks31%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Tpk (I-76) over Mt. Rock Spring Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Pa Tpk (I-76) over Mt. Rock Spring Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does Pa Tpk (I-76) over Mt. Rock Spring Creek carry?

About 21,474 vehicles per day (2010 count), of which roughly 31% are trucks.

How long is Pa Tpk (I-76) over Mt. Rock Spring Creek?

The structure is 67 ft (20.4 m) long with a longest span of 65 ft (19.8 m) and a deck 121 ft wide.

Who owns Pa Tpk (I-76) over Mt. Rock Spring Creek?

It is owned by the State Toll Authority.