US Bridges

RTE 177 over RTE I81 RTE I81

Good

Jefferson County, New York · 4 MI S JCT I81 & SH 232 · Structure no. 000000001032100

Built
2015
10 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
280 ft
2 main spans
Daily traffic
2,469
2015 count
Owner
State
State Highway Agency

About this bridge

RTE 177 over RTE I81 RTE I81 is a steel continuous stringer/multi-beam or girder carrying RTE 177 over RTE I81 RTE I81 in Jefferson County, New York. It was built in 2015, so it is 10 years old, younger than the New York average of 53 years.

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

It carries about 2,469 vehicles a day, roughly 17% of them trucks, projected to reach 2,575 by 2041. The structure is 280 ft (85.3 m) long and 37 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesRTE 177
CrossesRTE I81 RTE I81
Location4 MI S JCT I81 & SH 232
RouteState Highway 177
CountyJefferson County
StateNew York
Coordinates43.8688, -76.01538
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length280 ft (85.3 m)
Longest span139 ft (42.4 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,469 (2015)
Projected traffic2,575 by 2041
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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$4.2 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 177 over RTE I81 RTE I81 built?

It was built in 2015, making it 10 years old in 2025.

What condition is RTE 177 over RTE I81 RTE I81 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 December 2023.

How much traffic does RTE 177 over RTE I81 RTE I81 carry?

About 2,469 vehicles per day (2015 count), of which roughly 17% are trucks.

How long is RTE 177 over RTE I81 RTE I81?

The structure is 280 ft (85.3 m) long with a longest span of 139 ft (42.4 m) and a deck 37 ft wide.

Who owns RTE 177 over RTE I81 RTE I81?

It is owned by the State Highway Agency.