US Bridges

RTE 305 over Black Creek

Fair

Allegany County, New York · 4.0 MI SE JCT Rts 19 +305 · Structure no. 000000001045550

Built
1939
86 years old, rebuilt 2002
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
83 ft
1 main span
Daily traffic
1,341
2018 count
Owner
State
State Highway Agency

About this bridge

RTE 305 over Black Creek is a steel stringer/multi-beam or girder carrying RTE 305 over Black Creek in Allegany County, New York. It was built in 1939 and reconstructed in 2002, so it is 86 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 6 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 1,341 vehicles a day, roughly 8% of them trucks, projected to reach 1,398 by 2041. The structure is 83 ft (25.3 m) long and 42 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesRTE 305
CrossesBlack Creek
Location4.0 MI SE JCT Rts 19 +305
RouteState Highway 305
CountyAllegany County
StateNew York
Coordinates42.3025, -78.16274
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length83 ft (25.3 m)
Longest span79 ft (24.1 m)
Deck width42 ft (12.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,341 (2018)
Projected traffic1,398 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 305 over Black Creek built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2002.

What condition is RTE 305 over Black 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 July 2024.

How much traffic does RTE 305 over Black Creek carry?

About 1,341 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is RTE 305 over Black Creek?

The structure is 83 ft (25.3 m) long with a longest span of 79 ft (24.1 m) and a deck 42 ft wide.

Who owns RTE 305 over Black Creek?

It is owned by the State Highway Agency.