US Bridges

RTE 10 over Unknown Creek

Fair

Delaware County, New York · 1.9 MI SW JCT Rts 10 + 23 · Structure no. 000000001007850

Built
1951
74 years old, rebuilt 2003
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
2,382
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 10 over Unknown Creek is a concrete slab carrying RTE 10 over Unknown Creek in Delaware County, New York. It was built in 1951 and reconstructed in 2003, so it is 74 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 2,382 vehicles a day, roughly 10% of them trucks, projected to reach 2,484 by 2041. The structure is 23 ft (7 m) long and 43 ft wide. If it were closed, the detour would be 58.4 mi (94 km).

Location

Open in Google Maps
CarriesRTE 10
CrossesUnknown Creek
Location1.9 MI SW JCT Rts 10 + 23
RouteState Highway 10
CountyDelaware County
StateNew York
Coordinates42.37944, -74.66345
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMay 2023
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,382 (2021)
Projected traffic2,484 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed58.4 mi (94 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$700,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 10 over Unknown Creek built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2003.

What condition is RTE 10 over Unknown Creek 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 May 2023.

How much traffic does RTE 10 over Unknown Creek carry?

About 2,382 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is RTE 10 over Unknown Creek?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns RTE 10 over Unknown Creek?

It is owned by the State Highway Agency.