US Bridges

RTE 11 over Grasse River

Good

St. Lawrence County, New York · Vil CANTON-.1 MI E JCT68W · Structure no. 000000001008770

Built
1981
44 years old, rebuilt 2017
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
143 ft
1 main span
Daily traffic
15,615
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 11 over Grasse River is a steel stringer/multi-beam or girder carrying RTE 11 over Grasse River in St. Lawrence County, New York. It was built in 1981 and reconstructed in 2017, so it is 44 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 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 15,615 vehicles a day, roughly 9% of them trucks, projected to reach 15,688 by 2041. The structure is 143 ft (43.6 m) long and 70 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesRTE 11
CrossesGrasse River
LocationVil CANTON-.1 MI E JCT68W
RouteState Highway 11
CountySt. Lawrence County
StateNew York
Coordinates44.59513, -75.17508
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating79 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span140 ft (42.6 m)
Deck width70 ft (21.3 m)
Roadway width58 ft (17.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,615 (2021)
Projected traffic15,688 by 2041
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

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$4.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 11 over Grasse River built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2017.

What condition is RTE 11 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 July 2023.

How much traffic does RTE 11 over Grasse River carry?

About 15,615 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is RTE 11 over Grasse River?

The structure is 143 ft (43.6 m) long with a longest span of 140 ft (42.6 m) and a deck 70 ft wide.

Who owns RTE 11 over Grasse River?

It is owned by the State Highway Agency.