US Bridges

County Road 13 over Unadilla River

Fair

Otsego County, New York · 0.5 S of New Berlin · Structure no. 000000003353950

Built
1933
92 years old, rebuilt 1990
Condition
Fair
inspected August 2024
Type
Truss - Thru
Steel
Length
165 ft
1 main span
Daily traffic
1,888
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 13 over Unadilla River is a steel truss - thru carrying County Road 13 over Unadilla River in Otsego County, New York. It was built in 1933 and reconstructed in 1990, so it is 92 years old, older 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 5 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 1,888 vehicles a day, roughly 10% of them trucks, projected to reach 1,969 by 2041. The structure is 165 ft (50.3 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 13
CrossesUnadilla River
Location0.5 S of New Berlin
RouteCounty Highway 0
CountyOtsego County
StateNew York
Coordinates42.61617, -75.33131
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length165 ft (50.3 m)
Longest span164 ft (49.9 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck12 ft (3.6 m)

Traffic and service

Average daily traffic1,888 (2020)
Projected traffic1,969 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$5.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 13 over Unadilla River built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1990.

What condition is County Road 13 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 August 2024.

How much traffic does County Road 13 over Unadilla River carry?

About 1,888 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County Road 13 over Unadilla River?

The structure is 165 ft (50.3 m) long with a longest span of 164 ft (49.9 m) and a deck 27 ft wide.

Who owns County Road 13 over Unadilla River?

It is owned by the County Highway Agency.