US Bridges

I-81 Nb; SR 0081 over Walnut Bottom Rd.

Fair

Cumberland County, Pennsylvania · College St. Exit 13 · Structure no. 000000000013668

Built
1962
63 years old, rebuilt 2006
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
232 ft
1 main span
Daily traffic
29,378
2024 count
Owner
State
State Highway Agency

About this bridge

I-81 Nb; SR 0081 over Walnut Bottom Rd. is a steel stringer/multi-beam or girder carrying I-81 Nb; SR 0081 over Walnut Bottom Rd. in Cumberland County, Pennsylvania. It was built in 1962 and reconstructed in 2006, so it is 63 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 29,378 vehicles a day, roughly 31% of them trucks, projected to reach 39,766 by 2035. The structure is 232 ft (70.7 m) long and 37 ft wide.

Location

Open in Google Maps
CarriesI-81 Nb; SR 0081
CrossesWalnut Bottom Rd.
LocationCollege St. Exit 13
RouteInterstate 81
CountyCumberland County
StatePennsylvania
Coordinates40.18709, -77.20821
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span116 ft (35.4 m)
Deck width37 ft (11.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,378 (2024)
Projected traffic39,766 by 2035
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$846,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-81 Nb; SR 0081 over Walnut Bottom Rd. built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2006.

What condition is I-81 Nb; SR 0081 over Walnut Bottom Rd. 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 December 2023.

How much traffic does I-81 Nb; SR 0081 over Walnut Bottom Rd. carry?

About 29,378 vehicles per day (2024 count), of which roughly 31% are trucks.

How long is I-81 Nb; SR 0081 over Walnut Bottom Rd.?

The structure is 232 ft (70.7 m) long with a longest span of 116 ft (35.4 m) and a deck 37 ft wide.

Who owns I-81 Nb; SR 0081 over Walnut Bottom Rd.?

It is owned by the State Highway Agency.