US Bridges

County Road 15B over Black Creek

Good

Allegany County, New York · 0.1 MI E of Int. With Co. · Structure no. 000000003047870

Built
1974
51 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
69 ft
3 main spans
Daily traffic
311
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 15B over Black Creek is a concrete continuous culvert carrying County Road 15B over Black Creek in Allegany County, New York. It was built in 1974, so it is 51 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 311 vehicles a day, roughly 8% of them trucks, projected to reach 324 by 2041. The structure is 69 ft (21 m) long and 39 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesCounty Road 15B
CrossesBlack Creek
Location0.1 MI E of Int. With Co.
RouteCounty Highway 0
Coordinates42.39108, -77.91843
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.8 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length69 ft (21 m)
Longest span20 ft (6 m)
Deck width39 ft (11.9 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic311 (2020)
Projected traffic324 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 15B over Black Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is County Road 15B over Black Creek 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 October 2024.

How much traffic does County Road 15B over Black Creek carry?

About 311 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is County Road 15B over Black Creek?

The structure is 69 ft (21 m) long with a longest span of 20 ft (6 m) and a deck 39 ft wide.

Who owns County Road 15B over Black Creek?

It is owned by the County Highway Agency.