Structure 3340880 · St. Lawrence County, NY

County Road 23 over Oswegatchie River

Carries County Road 23 over Oswegatchie River, 1 Mile S RTE 58 23 Int..

Overall conditionGood

Set by its lowest-rated component: Deck at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructure9/9 · Excellent
Substructure9/9 · Excellent
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT103 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9 · sets the ratingSuperstructure 9/9Substructure 9/9

103 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built199828 years old
Length103.0 ft31.4 m
Daily traffic381counted 2015
Last inspectedJuly 2024every 24 months

Location

StateNew York
CountySt. Lawrence
Location1 Mile S RTE 58 23 Int.
CarriesCounty Road 23
CrossesOswegatchie River
Coordinates44.26808, -75.20716

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length103.0 ft (31.4 m)
Max Span99.7 ft (30.4 m)
Deck Width29.5 ft (9 m)
Deck Area282.6 sq m
Main Spans1
Year Built1998

Traffic

Avg Daily Traffic381 (2015)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000003340880

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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