US Bridges

RTE 131 over Grasse River

Good

St. Lawrence County, New York · 2.0 Miles West of Junctio · Structure no. 000000001037700

Built
1956
69 years old, rebuilt 1987
Condition
Good
inspected September 2023
Type
Girder and Floorbeam System
Steel
Length
615 ft
5 main spans
Daily traffic
2,260
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 131 over Grasse River is a steel girder and floorbeam system carrying RTE 131 over Grasse River in St. Lawrence County, New York. It was built in 1956 and reconstructed in 1987, so it is 69 years old, older 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 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 2,260 vehicles a day, roughly 10% of them trucks, projected to reach 2,745 by 2041. The structure is 615 ft (187.5 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRTE 131
CrossesGrasse River
Location2.0 Miles West of Junctio
RouteState Highway 131
Coordinates44.95356, -74.83907
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating105.1 US tons
Inventory rating63.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length615 ft (187.5 m)
Longest span163 ft (49.7 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,260 (2019)
Projected traffic2,745 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$7.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 131 over Grasse River built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1987.

What condition is RTE 131 over Grasse 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 September 2023.

How much traffic does RTE 131 over Grasse River carry?

About 2,260 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is RTE 131 over Grasse River?

The structure is 615 ft (187.5 m) long with a longest span of 163 ft (49.7 m) and a deck 38 ft wide.

Who owns RTE 131 over Grasse River?

It is owned by the State Highway Agency.