US Bridges

I-81 Nb; SR 0081 over I-83 Nb; SR 0083

Fair

Dauphin County, Pennsylvania · I-81& I-83 Interchange · Structure no. 000000000014228

Built
1969
56 years old, rebuilt 2003
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
159 ft
3 main spans
Daily traffic
40,290
2024 count
Owner
State
State Highway Agency

About this bridge

I-81 Nb; SR 0081 over I-83 Nb; SR 0083 is a steel continuous stringer/multi-beam or girder carrying I-81 Nb; SR 0081 over I-83 Nb; SR 0083 in Dauphin County, Pennsylvania. It was built in 1969 and reconstructed in 2003, so it is 56 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 40,290 vehicles a day, roughly 17% of them trucks, projected to reach 46,197 by 2032. The structure is 159 ft (48.5 m) long and 53 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI-81 Nb; SR 0081
CrossesI-83 Nb; SR 0083
LocationI-81& I-83 Interchange
RouteInterstate 81
CountyDauphin County
StatePennsylvania
Coordinates40.30861, -76.83434
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span68 ft (20.7 m)
Deck width53 ft (16.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic40,290 (2024)
Projected traffic46,197 by 2032
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 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 I-83 Nb; SR 0083 built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2003.

What condition is I-81 Nb; SR 0081 over I-83 Nb; SR 0083 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 I-83 Nb; SR 0083 carry?

About 40,290 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is I-81 Nb; SR 0081 over I-83 Nb; SR 0083?

The structure is 159 ft (48.5 m) long with a longest span of 68 ft (20.7 m) and a deck 53 ft wide.

Who owns I-81 Nb; SR 0081 over I-83 Nb; SR 0083?

It is owned by the State Highway Agency.