US Bridges

I-81 Nb;sr 0081 over T-338;TRIB Swatara

Fair

Lebanon County, Pennsylvania · 2 Mi.E. of Exit #80 · Structure no. 000000000022642

Built
1967
58 years old, rebuilt 1995
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
201 ft
4 main spans
Daily traffic
26,994
2024 count
Owner
State
State Highway Agency

About this bridge

I-81 Nb;sr 0081 over T-338;TRIB Swatara is a prestressed concrete box beam or girders - multiple carrying I-81 Nb;sr 0081 over T-338;TRIB Swatara in Lebanon County, Pennsylvania. It was built in 1967 and reconstructed in 1995, so it is 58 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 26,994 vehicles a day, roughly 42% of them trucks, projected to reach 32,933 by 2044. The structure is 201 ft (61.3 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-81 Nb;sr 0081
CrossesT-338;TRIB Swatara
Location2 Mi.E. of Exit #80
RouteInterstate 81
CountyLebanon County
StatePennsylvania
Coordinates40.39864, -76.61402
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length201 ft (61.3 m)
Longest span56 ft (17.1 m)
Deck width55 ft (16.9 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,994 (2024)
Projected traffic32,933 by 2044
Trucks42%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-81 Nb;sr 0081 over T-338;TRIB Swatara built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1995.

What condition is I-81 Nb;sr 0081 over T-338;TRIB Swatara 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 Nb;sr 0081 over T-338;TRIB Swatara carry?

About 26,994 vehicles per day (2024 count), of which roughly 42% are trucks.

How long is I-81 Nb;sr 0081 over T-338;TRIB Swatara?

The structure is 201 ft (61.3 m) long with a longest span of 56 ft (17.1 m) and a deck 55 ft wide.

Who owns I-81 Nb;sr 0081 over T-338;TRIB Swatara?

It is owned by the State Highway Agency.