US Bridges

South Bridge ST over Beaver River

Good

Lewis County, New York · In Croghan · Structure no. 000000002220310

Built
1993
32 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
31
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

South Bridge ST over Beaver River is a prestressed concrete box beam or girders - multiple carrying South Bridge ST over Beaver River in Lewis County, New York. It was built in 1993, so it is 32 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 31 vehicles a day, roughly 17% of them trucks, projected to reach 43 by 2040. The structure is 96 ft (29.3 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSouth Bridge ST
CrossesBeaver River
LocationIn Croghan
RouteCounty Highway 0
Coordinates43.89875, -75.39227
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating67 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length96 ft (29.3 m)
Longest span92 ft (28 m)
Deck width17 ft (5.2 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31 (2020)
Projected traffic43 by 2040
Trucks17%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$442,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was South Bridge ST over Beaver River built?

It was built in 1993, making it 32 years old in 2025.

What condition is South Bridge ST over Beaver 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 April 2023.

How much traffic does South Bridge ST over Beaver River carry?

About 31 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is South Bridge ST over Beaver River?

The structure is 96 ft (29.3 m) long with a longest span of 92 ft (28 m) and a deck 17 ft wide.

Who owns South Bridge ST over Beaver River?

It is owned by the Town or Township Highway Agency.