US Bridges

South Shore Road over Oswegatchie River

Good

St. Lawrence County, New York · Wanakena · Structure no. 000000003340940

Built
2020
5 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
182 ft
2 main spans
Daily traffic
166
2021 count
Owner
County
County Highway Agency

About this bridge

South Shore Road over Oswegatchie River is a steel continuous stringer/multi-beam or girder carrying South Shore Road over Oswegatchie River in St. Lawrence County, New York. It was built in 2020, so it is 5 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 166 vehicles a day, roughly 5% of them trucks, projected to reach 232 by 2041. The structure is 182 ft (55.5 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSouth Shore Road
CrossesOswegatchie River
LocationWanakena
RouteCounty Highway 0
Coordinates44.13267, -74.92435
Functional classRural Local

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.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating84.7 US tons
Inventory rating65.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length182 ft (55.5 m)
Longest span89 ft (27.1 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166 (2021)
Projected traffic232 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was South Shore Road over Oswegatchie River built?

It was built in 2020, making it 5 years old in 2025.

What condition is South Shore Road 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 August 2024.

How much traffic does South Shore Road over Oswegatchie River carry?

About 166 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is South Shore Road over Oswegatchie River?

The structure is 182 ft (55.5 m) long with a longest span of 89 ft (27.1 m) and a deck 29 ft wide.

Who owns South Shore Road over Oswegatchie River?

It is owned by the County Highway Agency.