US Bridges

RTE 56 over Raquette River

Good

St. Lawrence County, New York · 4.2 Miles SE of JCT of Ny · Structure no. 000000001027250

Built
1994
31 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
242 ft
2 main spans
Daily traffic
1,043
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 56 over Raquette River is a steel continuous stringer/multi-beam or girder carrying RTE 56 over Raquette River in St. Lawrence County, New York. It was built in 1994, so it is 31 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 1,043 vehicles a day, roughly 15% of them trucks, projected to reach 1,049 by 2041. The structure is 242 ft (73.8 m) long and 41 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesRTE 56
CrossesRaquette River
Location4.2 Miles SE of JCT of Ny
RouteState Highway 56
Coordinates44.50944, -74.88417
Functional classRural 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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating58.5 US tons
Inventory rating45.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length242 ft (73.8 m)
Longest span120 ft (36.5 m)
Deck width41 ft (12.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,043 (2020)
Projected traffic1,049 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed7.5 mi (12 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$3.6 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 56 over Raquette River built?

It was built in 1994, making it 31 years old in 2025.

What condition is RTE 56 over Raquette 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 May 2024.

How much traffic does RTE 56 over Raquette River carry?

About 1,043 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is RTE 56 over Raquette River?

The structure is 242 ft (73.8 m) long with a longest span of 120 ft (36.5 m) and a deck 41 ft wide.

Who owns RTE 56 over Raquette River?

It is owned by the State Highway Agency.