US Bridges

RTE I81 over Liberty ST

Fair

Jefferson County, New York · .3 MI S JCT SH 178 & I81 · Structure no. 000000001032061

Built
1961
64 years old
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
49 ft
1 main span
Daily traffic
9,336
2009 count
Owner
State
State Highway Agency

About this bridge

RTE I81 over Liberty ST is a concrete frame carrying RTE I81 over Liberty ST in Jefferson County, New York. It was built in 1961, so it is 64 years old, older than the New York average of 53 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 9,336 vehicles a day, roughly 24% of them trucks. The structure is 49 ft (14.9 m) long and 46 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesRTE I81
CrossesLiberty ST
Location.3 MI S JCT SH 178 & I81
RouteInterstate 81
CountyJefferson County
StateNew York
Coordinates43.80792, -76.03647
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.5 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span48 ft (14.6 m)
Deck width46 ft (14 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,336 (2009)
Projected traffic—
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.8 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I81 over Liberty ST built?

It was built in 1961, making it 64 years old in 2025.

What condition is RTE I81 over Liberty ST 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 May 2024.

How much traffic does RTE I81 over Liberty ST carry?

About 9,336 vehicles per day (2009 count), of which roughly 24% are trucks.

How long is RTE I81 over Liberty ST?

The structure is 49 ft (14.9 m) long with a longest span of 48 ft (14.6 m) and a deck 46 ft wide.

Who owns RTE I81 over Liberty ST?

It is owned by the State Highway Agency.