US Bridges

Hillside Road over Mohawk River

Fair

Oneida County, New York · At Hillside · Structure no. 000000002206240

Built
1905
120 years old, rebuilt 1998
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
234
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Hillside Road over Mohawk River is a prestressed concrete box beam or girders - multiple carrying Hillside Road over Mohawk River in Oneida County, New York. It was built in 1905 and reconstructed in 1998, so it is 120 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 234 vehicles a day, roughly 15% of them trucks, projected to reach 328 by 2041. The structure is 78 ft (23.8 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHillside Road
CrossesMohawk River
LocationAt Hillside
Coordinates43.34939, -75.37119
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating92 US tons
Inventory rating55 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadOther
Structure length78 ft (23.8 m)
Longest span76 ft (23.2 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic234 (2021)
Projected traffic328 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$645,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hillside Road over Mohawk River built?

It was built in 1905, making it 120 years old in 2025. It was reconstructed in 1998.

What condition is Hillside Road over Mohawk 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 September 2024.

How much traffic does Hillside Road over Mohawk River carry?

About 234 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Hillside Road over Mohawk River?

The structure is 78 ft (23.8 m) long with a longest span of 76 ft (23.2 m) and a deck 20 ft wide.

Who owns Hillside Road over Mohawk River?

It is owned by the Town or Township Highway Agency.