US Bridges

I-81; SR 0081 over Bow Creek

Fair

Dauphin County, Pennsylvania · Grantville · Structure no. 000000000014255

Built
1968
57 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
61,566
2024 count
Owner
State
State Highway Agency

About this bridge

I-81; SR 0081 over Bow Creek is a concrete culvert carrying I-81; SR 0081 over Bow Creek in Dauphin County, Pennsylvania. It was built in 1968, 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 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 61,566 vehicles a day, roughly 41% of them trucks, projected to reach 72,277 by 2032. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-81; SR 0081
CrossesBow Creek
LocationGrantville
RouteInterstate 81
CountyDauphin County
StatePennsylvania
Coordinates40.38006, -76.66051
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating51 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61,566 (2024)
Projected traffic72,277 by 2032
Trucks41%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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; SR 0081 over Bow Creek built?

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

What condition is I-81; SR 0081 over Bow Creek 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 July 2024.

How much traffic does I-81; SR 0081 over Bow Creek carry?

About 61,566 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is I-81; SR 0081 over Bow Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m).

Who owns I-81; SR 0081 over Bow Creek?

It is owned by the State Highway Agency.