US Bridges

County Road 36 over Grasse River

Fair

St. Lawrence County, New York · .2 Mile SE of Chase Mills · Structure no. 000000003342040

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
383 ft
3 main spans
Daily traffic
258
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 36 over Grasse River is a steel continuous stringer/multi-beam or girder carrying County Road 36 over Grasse River in St. Lawrence County, New York. It was built in 1981, 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 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 258 vehicles a day, roughly 10% of them trucks, projected to reach 361 by 2038. The structure is 383 ft (116.7 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 36
CrossesGrasse River
Location.2 Mile SE of Chase Mills
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.84722, -75.07918
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating109 US tons
Inventory rating65 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length383 ft (116.7 m)
Longest span151 ft (46 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic258 (2018)
Projected traffic361 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 36 over Grasse River built?

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

What condition is County Road 36 over Grasse River 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 August 2023.

How much traffic does County Road 36 over Grasse River carry?

About 258 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is County Road 36 over Grasse River?

The structure is 383 ft (116.7 m) long with a longest span of 151 ft (46 m) and a deck 32 ft wide.

Who owns County Road 36 over Grasse River?

It is owned by the County Highway Agency.