US Bridges

RTE 305 over Griffin Creek

Fair

Allegany County, New York · 1.5 MI Southeast of Cuba · Structure no. 000000001045470

Built
2011
14 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
1,312
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 305 over Griffin Creek is a prestressed concrete box beam or girders - single or spread carrying RTE 305 over Griffin Creek in Allegany County, New York. It was built in 2011, so it is 14 years old, younger 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 1,312 vehicles a day, roughly 7% of them trucks, projected to reach 1,368 by 2041. The structure is 60 ft (18.3 m) long and 44 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesRTE 305
CrossesGriffin Creek
Location1.5 MI Southeast of Cuba
RouteState Highway 305
CountyAllegany County
StateNew York
Coordinates42.19712, -78.27133
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.6 US tons
Inventory rating48.5 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,312 (2021)
Projected traffic1,368 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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$1.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 305 over Griffin Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is RTE 305 over Griffin 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 November 2023.

How much traffic does RTE 305 over Griffin Creek carry?

About 1,312 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is RTE 305 over Griffin Creek?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 44 ft wide.

Who owns RTE 305 over Griffin Creek?

It is owned by the State Highway Agency.