US Bridges

County Road 85 over Trib Walnut Creek

Poor

Chautauqua County, New York · 1.8 MI NE of Forestville · Structure no. 000000001048420

Built
1966
59 years old
Condition
Poor
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
644
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 85 over Trib Walnut Creek is a prestressed concrete box beam or girders - multiple carrying County Road 85 over Trib Walnut Creek in Chautauqua 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 644 vehicles a day, roughly 7% of them trucks, projected to reach 650 by 2041. The structure is 50 ft (15.2 m) long and 39 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCounty Road 85
CrossesTrib Walnut Creek
Location1.8 MI NE of Forestville
RouteCounty Highway 0
Coordinates42.49336, -79.16157
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic644 (2020)
Projected traffic650 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$1.6 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 85 over Trib Walnut Creek built?

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

What condition is County Road 85 over Trib Walnut Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does County Road 85 over Trib Walnut Creek carry?

About 644 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is County Road 85 over Trib Walnut Creek?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 39 ft wide.

Who owns County Road 85 over Trib Walnut Creek?

It is owned by the County Highway Agency.