US Bridges

SR 0081 I-81 over Lack CO RR & Lack River

Good

Lackawanna County, Pennsylvania · Scranton over Rr&lack Rvr · Structure no. 000000000020458

Built
1958
67 years old, rebuilt 2015
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
410 ft
5 main spans
Daily traffic
55,477
2024 count
Owner
State
State Highway Agency

About this bridge

SR 0081 I-81 over Lack CO RR & Lack River is a steel stringer/multi-beam or girder carrying SR 0081 I-81 over Lack CO RR & Lack River in Lackawanna County, Pennsylvania. It was built in 1958 and reconstructed in 2015, so it is 67 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 55,477 vehicles a day, roughly 16% of them trucks, projected to reach 69,796 by 2032. The structure is 410 ft (125 m) long and 92 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR 0081 I-81
CrossesLack CO RR & Lack River
LocationScranton over Rr&lack Rvr
RouteInterstate 81
Coordinates41.44937, -75.63655
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating96 US tons
Inventory rating57 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length410 ft (125 m)
Longest span100 ft (30.5 m)
Deck width92 ft (28 m)
Roadway width84 ft (25.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,477 (2024)
Projected traffic69,796 by 2032
Trucks16%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 0081 I-81 over Lack CO RR & Lack River built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2015.

What condition is SR 0081 I-81 over Lack CO RR & Lack River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does SR 0081 I-81 over Lack CO RR & Lack River carry?

About 55,477 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is SR 0081 I-81 over Lack CO RR & Lack River?

The structure is 410 ft (125 m) long with a longest span of 100 ft (30.5 m) and a deck 92 ft wide.

Who owns SR 0081 I-81 over Lack CO RR & Lack River?

It is owned by the State Highway Agency.