US Bridges

I-81 Nb; SR 0081 over Industrial Highway

Fair

Dauphin County, Pennsylvania · Over Industrial Hwy. · Structure no. 000000000014221

Built
1975
50 years old, rebuilt 2003
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
156 ft
3 main spans
Daily traffic
37,158
2024 count
Owner
State
State Highway Agency

About this bridge

I-81 Nb; SR 0081 over Industrial Highway is a prestressed concrete stringer/multi-beam or girder carrying I-81 Nb; SR 0081 over Industrial Highway in Dauphin County, Pennsylvania. It was built in 1975 and reconstructed in 2003, so it is 50 years old, younger 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 37,158 vehicles a day, roughly 23% of them trucks, projected to reach 44,589 by 2045. The structure is 156 ft (47.5 m) long and 67 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-81 Nb; SR 0081
CrossesIndustrial Highway
LocationOver Industrial Hwy.
RouteInterstate 81
CountyDauphin County
StatePennsylvania
Coordinates40.30686, -76.88672
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span78 ft (23.8 m)
Deck width67 ft (20.4 m)
Roadway width63 ft (19.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,158 (2024)
Projected traffic44,589 by 2045
Trucks23%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$372,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-81 Nb; SR 0081 over Industrial Highway built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2003.

What condition is I-81 Nb; SR 0081 over Industrial Highway 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 2022.

How much traffic does I-81 Nb; SR 0081 over Industrial Highway carry?

About 37,158 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is I-81 Nb; SR 0081 over Industrial Highway?

The structure is 156 ft (47.5 m) long with a longest span of 78 ft (23.8 m) and a deck 67 ft wide.

Who owns I-81 Nb; SR 0081 over Industrial Highway?

It is owned by the State Highway Agency.