US Bridges

County Road 115 over Tomhannock Backwater

Fair

Rensselaer County, New York · 4.4 MI NW Pittstown · Structure no. 000000003303410

Built
1948
77 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
1,724
2017 count
Owner
County
County Highway Agency

About this bridge

County Road 115 over Tomhannock Backwater is a concrete slab carrying County Road 115 over Tomhannock Backwater in Rensselaer County, New York. It was built in 1948, so it is 77 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 1,724 vehicles a day, roughly 5% of them trucks, projected to reach 2,414 by 2037. The structure is 33 ft (10.1 m) long and 31 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

Open in Google Maps
CarriesCounty Road 115
CrossesTomhannock Backwater
Location4.4 MI NW Pittstown
RouteCounty Highway 0
CountyRensselaer County
StateNew York
Coordinates42.86885, -73.55637
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 alignment7: Better than present minimum criteria
Operating rating56 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,724 (2017)
Projected traffic2,414 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 115 over Tomhannock Backwater built?

It was built in 1948, making it 77 years old in 2025.

What condition is County Road 115 over Tomhannock Backwater 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 June 2024.

How much traffic does County Road 115 over Tomhannock Backwater carry?

About 1,724 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is County Road 115 over Tomhannock Backwater?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns County Road 115 over Tomhannock Backwater?

It is owned by the County Highway Agency.