US Bridges

I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK

Fair

Cumberland County, Pennsylvania · 0.75 Mi.S. of Exit 29 · Structure no. 000000000013637

Built
1963
62 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
21,128
2024 count
Owner
State
State Highway Agency

About this bridge

I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK is a prestressed concrete box beam or girders - multiple carrying I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK in Cumberland County, Pennsylvania. It was built in 1963, so it is 62 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 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 21,128 vehicles a day, roughly 35% of them trucks, projected to reach 23,699 by 2032. The structure is 35 ft (10.7 m) long and 46 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-81 Sb; SR 0081
CrossesTwp RD (old SR 3003)TNBK
Location0.75 Mi.S. of Exit 29
RouteInterstate 81
CountyCumberland County
StatePennsylvania
Coordinates40.05187, -77.48577
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span34 ft (10.4 m)
Deck width46 ft (13.9 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,128 (2024)
Projected traffic23,699 by 2032
Trucks35%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK built?

It was built in 1963, making it 62 years old in 2025.

What condition is I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK 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 November 2023.

How much traffic does I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK carry?

About 21,128 vehicles per day (2024 count), of which roughly 35% are trucks.

How long is I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 46 ft wide.

Who owns I-81 Sb; SR 0081 over Twp RD (old SR 3003)TNBK?

It is owned by the State Highway Agency.