US Bridges

County Road 27 over N.Br.Grasse River

Good

St. Lawrence County, New York · 2.0 MI E of Clare · Structure no. 000000003340730

Built
2011
14 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
513
2015 count
Owner
County
County Highway Agency

About this bridge

County Road 27 over N.Br.Grasse River is a prestressed concrete box beam or girders - multiple carrying County Road 27 over N.Br.Grasse River in St. Lawrence County, New York. It was built in 2011, so it is 14 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 513 vehicles a day, roughly 7% of them trucks, projected to reach 535 by 2041. The structure is 77 ft (23.5 m) long and 38 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesCounty Road 27
CrossesN.Br.Grasse River
Location2.0 MI E of Clare
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.42918, -75.05177
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.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating71 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length77 ft (23.5 m)
Longest span76 ft (23.2 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic513 (2015)
Projected traffic535 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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$777,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 27 over N.Br.Grasse River built?

It was built in 2011, making it 14 years old in 2025.

What condition is County Road 27 over N.Br.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 County Road 27 over N.Br.Grasse River carry?

About 513 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is County Road 27 over N.Br.Grasse River?

The structure is 77 ft (23.5 m) long with a longest span of 76 ft (23.2 m) and a deck 38 ft wide.

Who owns County Road 27 over N.Br.Grasse River?

It is owned by the County Highway Agency.