US Bridges

County Road 17 over Oswegatchie River

Good

St. Lawrence County, New York · .15 Mile N E RTE 17 & 812 · Structure no. 000000003340850

Built
1965
60 years old, rebuilt 2020
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
275 ft
2 main spans
Daily traffic
461
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 17 over Oswegatchie River is a steel stringer/multi-beam or girder carrying County Road 17 over Oswegatchie River in St. Lawrence County, New York. It was built in 1965 and reconstructed in 2020, so it is 60 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 461 vehicles a day, roughly 9% of them trucks, projected to reach 645 by 2038. The structure is 275 ft (83.8 m) long and 29 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesCounty Road 17
CrossesOswegatchie River
Location.15 Mile N E RTE 17 & 812
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.50134, -75.34555
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating46.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length275 ft (83.8 m)
Longest span135 ft (41.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic461 (2018)
Projected traffic645 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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$2.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 17 over Oswegatchie River built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2020.

What condition is County Road 17 over Oswegatchie 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 2024.

How much traffic does County Road 17 over Oswegatchie River carry?

About 461 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is County Road 17 over Oswegatchie River?

The structure is 275 ft (83.8 m) long with a longest span of 135 ft (41.1 m) and a deck 29 ft wide.

Who owns County Road 17 over Oswegatchie River?

It is owned by the County Highway Agency.