US Bridges

County Road 85 over Unadilla River

Good

Herkimer County, New York · 1 Mile SE of Cedarville · Structure no. 000000003307530

Built
2013
12 years old
Condition
Good
inspected November 2023
Type
Frame
Concrete
Length
35 ft
1 main span
Daily traffic
97
2017 count
Owner
County
County Highway Agency

About this bridge

County Road 85 over Unadilla River is a concrete frame carrying County Road 85 over Unadilla River in Herkimer County, New York. It was built in 2013, so it is 12 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 97 vehicles a day, roughly 15% of them trucks, projected to reach 136 by 2037. The structure is 35 ft (10.7 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 85
CrossesUnadilla River
Location1 Mile SE of Cedarville
CountyHerkimer County
StateNew York
Coordinates42.91812, -75.10196
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating110.1 US tons
Inventory rating96 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length35 ft (10.7 m)
Longest span28 ft (8.5 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97 (2017)
Projected traffic136 by 2037
Trucks15%
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$499,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 85 over Unadilla River built?

It was built in 2013, making it 12 years old in 2025.

What condition is County Road 85 over Unadilla 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 November 2023.

How much traffic does County Road 85 over Unadilla River carry?

About 97 vehicles per day (2017 count), of which roughly 15% are trucks.

How long is County Road 85 over Unadilla River?

The structure is 35 ft (10.7 m) long with a longest span of 28 ft (8.5 m) and a deck 21 ft wide.

Who owns County Road 85 over Unadilla River?

It is owned by the County Highway Agency.