US Bridges

County Road 87 over W B Conewango Crk

Good

Chautauqua County, New York · .3 Mile North of Balcom · Structure no. 000000003325880

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
76 ft
1 main span
Daily traffic
936
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 87 over W B Conewango Crk is a prestressed concrete box beam or girders - multiple carrying County Road 87 over W B Conewango Crk in Chautauqua County, New York. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 936 vehicles a day, roughly 10% of them trucks, projected to reach 945 by 2041. The structure is 76 ft (23.2 m) long and 29 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesCounty Road 87
CrossesW B Conewango Crk
Location.3 Mile North of Balcom
RouteCounty Highway 0
CountyChautauqua County
StateNew York
Coordinates42.37467, -79.09051
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be 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 rating110.1 US tons
Inventory rating66 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length76 ft (23.2 m)
Longest span71 ft (21.6 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic936 (2020)
Projected traffic945 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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$1.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 87 over W B Conewango Crk built?

It was built in 2023, making it 2 years old in 2025.

What condition is County Road 87 over W B Conewango Crk 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 November 2023.

How much traffic does County Road 87 over W B Conewango Crk carry?

About 936 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County Road 87 over W B Conewango Crk?

The structure is 76 ft (23.2 m) long with a longest span of 71 ft (21.6 m) and a deck 29 ft wide.

Who owns County Road 87 over W B Conewango Crk?

It is owned by the County Highway Agency.