US Bridges

RTE I81 over South Sandy Creek

Fair

Jefferson County, New York · 2.7 MI S JCT 178 + I-81 · Structure no. 000000001032032

Built
1961
64 years old, rebuilt 1992
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
297 ft
3 main spans
Daily traffic
7,065
2019 count
Owner
State
State Highway Agency

About this bridge

RTE I81 over South Sandy Creek is a steel stringer/multi-beam or girder carrying RTE I81 over South Sandy Creek in Jefferson County, New York. It was built in 1961 and reconstructed in 1992, 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 7,065 vehicles a day, roughly 17% of them trucks, projected to reach 8,414 by 2041. The structure is 297 ft (90.5 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRTE I81
CrossesSouth Sandy Creek
Location2.7 MI S JCT 178 + I-81
RouteInterstate 81
Coordinates43.7748, -76.04434
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length297 ft (90.5 m)
Longest span113 ft (34.4 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,065 (2019)
Projected traffic8,414 by 2041
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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$3.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE I81 over South Sandy Creek built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1992.

What condition is RTE I81 over South Sandy 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 June 2024.

How much traffic does RTE I81 over South Sandy Creek carry?

About 7,065 vehicles per day (2019 count), of which roughly 17% are trucks.

How long is RTE I81 over South Sandy Creek?

The structure is 297 ft (90.5 m) long with a longest span of 113 ft (34.4 m) and a deck 34 ft wide.

Who owns RTE I81 over South Sandy Creek?

It is owned by the State Highway Agency.