US Bridges

RTE 305 over Black Creek

Good

Allegany County, New York · 1.6 MI SW of Black Creek · Structure no. 000000001045520

Built
1966
59 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
2,156
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 305 over Black Creek is a concrete culvert carrying RTE 305 over Black Creek in Allegany County, New York. It was built in 1966, so it is 59 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,156 vehicles a day, roughly 11% of them trucks, projected to reach 2,249 by 2041. The structure is 24 ft (7.3 m) long and 41 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesRTE 305
CrossesBlack Creek
Location1.6 MI SW of Black Creek
RouteState Highway 305
Coordinates42.26739, -78.25318
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating70 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span21 ft (6.4 m)
Deck width41 ft (12.5 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,156 (2019)
Projected traffic2,249 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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$776,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 305 over Black Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is RTE 305 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 June 2024.

How much traffic does RTE 305 over Black Creek carry?

About 2,156 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is RTE 305 over Black Creek?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 41 ft wide.

Who owns RTE 305 over Black Creek?

It is owned by the State Highway Agency.