US Bridges

Bay Road over Isl B Oswegatchie

Good

St. Lawrence County, New York · .8 MI N of Hailesboro · Structure no. 000000003341020

Built
1967
58 years old, rebuilt 2016
Condition
Good
inspected September 2024
Type
Girder and Floorbeam System
Steel
Length
74 ft
1 main span
Daily traffic
297
2017 count
Owner
County
County Highway Agency

About this bridge

Bay Road over Isl B Oswegatchie is a steel girder and floorbeam system carrying Bay Road over Isl B Oswegatchie in St. Lawrence County, New York. It was built in 1967 and reconstructed in 2016, so it is 58 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 297 vehicles a day, roughly 3% of them trucks, projected to reach 416 by 2037. The structure is 74 ft (22.6 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesBay Road
CrossesIsl B Oswegatchie
Location.8 MI N of Hailesboro
Coordinates44.31948, -75.44031
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length74 ft (22.6 m)
Longest span70 ft (21.3 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic297 (2017)
Projected traffic416 by 2037
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bay Road over Isl B Oswegatchie built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2016.

What condition is Bay Road over Isl B Oswegatchie 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 Bay Road over Isl B Oswegatchie carry?

About 297 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Bay Road over Isl B Oswegatchie?

The structure is 74 ft (22.6 m) long with a longest span of 70 ft (21.3 m) and a deck 28 ft wide.

Who owns Bay Road over Isl B Oswegatchie?

It is owned by the County Highway Agency.