US Bridges

I-81 Nb; SR 0081 over Twp RD 523

Fair

Dauphin County, Pennsylvania · 2 MI E Shellsville · Structure no. 000000000014252

Built
1968
57 years old, rebuilt 1995
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
28,742
2024 count
Owner
State
State Highway Agency

About this bridge

I-81 Nb; SR 0081 over Twp RD 523 is a prestressed concrete continuous box beam or girders - multiple carrying I-81 Nb; SR 0081 over Twp RD 523 in Dauphin County, Pennsylvania. It was built in 1968 and reconstructed in 1995, so it is 57 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 28,742 vehicles a day, roughly 37% of them trucks, projected to reach 39,197 by 2032. The structure is 110 ft (33.5 m) long and 55 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-81 Nb; SR 0081
CrossesTwp RD 523
Location2 MI E Shellsville
RouteInterstate 81
CountyDauphin County
StatePennsylvania
Coordinates40.37712, -76.6704
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating49.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length110 ft (33.5 m)
Longest span44 ft (13.4 m)
Deck width55 ft (16.9 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,742 (2024)
Projected traffic39,197 by 2032
Trucks37%
Lanes on structure3
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 Nb; SR 0081 over Twp RD 523 built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1995.

What condition is I-81 Nb; SR 0081 over Twp RD 523 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 September 2024.

How much traffic does I-81 Nb; SR 0081 over Twp RD 523 carry?

About 28,742 vehicles per day (2024 count), of which roughly 37% are trucks.

How long is I-81 Nb; SR 0081 over Twp RD 523?

The structure is 110 ft (33.5 m) long with a longest span of 44 ft (13.4 m) and a deck 55 ft wide.

Who owns I-81 Nb; SR 0081 over Twp RD 523?

It is owned by the State Highway Agency.