US Bridges

Latham Corners RD over Unadilla River

Fair

Otsego County, New York · 1 M N of Rockwells Mills · Structure no. 000000002227390

Built
1999
26 years old
Condition
Fair
inspected July 2023
Type
Truss - Thru
Steel
Length
144 ft
1 main span
Daily traffic
306
2018 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Latham Corners RD over Unadilla River is a steel truss - thru carrying Latham Corners RD over Unadilla River in Otsego County, New York. It was built in 1999, so it is 26 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 306 vehicles a day, roughly 14% of them trucks, projected to reach 428 by 2038. The structure is 144 ft (43.9 m) long and 26 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesLatham Corners RD
CrossesUnadilla River
Location1 M N of Rockwells Mills
Coordinates42.46066, -75.3983
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating61 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length144 ft (43.9 m)
Longest span140 ft (42.6 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic306 (2018)
Projected traffic428 by 2038
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$4.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Latham Corners RD over Unadilla River built?

It was built in 1999, making it 26 years old in 2025.

What condition is Latham Corners RD over Unadilla River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Latham Corners RD over Unadilla River carry?

About 306 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is Latham Corners RD over Unadilla River?

The structure is 144 ft (43.9 m) long with a longest span of 140 ft (42.6 m) and a deck 26 ft wide.

Who owns Latham Corners RD over Unadilla River?

It is owned by the Town or Township Highway Agency.