US Bridges

RTE I86 over Mannison Road

Fair

Chautauqua County, New York · 0.6 MI E JCT 430 + S.T.E. · Structure no. 000000001091771

Built
1973
52 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
1 main span
Daily traffic
3,619
2014 count
Owner
State
State Highway Agency

About this bridge

RTE I86 over Mannison Road is a steel stringer/multi-beam or girder carrying RTE I86 over Mannison Road in Chautauqua County, New York. It was built in 1973, so it is 52 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 3,619 vehicles a day, roughly 27% of them trucks. The structure is 100 ft (30.5 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRTE I86
CrossesMannison Road
Location0.6 MI E JCT 430 + S.T.E.
RouteInterstate 86
CountyChautauqua County
StateNew York
Coordinates42.1479, -79.64432
Functional classRural Principal Arterial - Interstate

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.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span95 ft (28.9 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,619 (2014)
Projected traffic—
Trucks27%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$3.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I86 over Mannison Road built?

It was built in 1973, making it 52 years old in 2025.

What condition is RTE I86 over Mannison Road 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 June 2023.

How much traffic does RTE I86 over Mannison Road carry?

About 3,619 vehicles per day (2014 count), of which roughly 27% are trucks.

How long is RTE I86 over Mannison Road?

The structure is 100 ft (30.5 m) long with a longest span of 95 ft (28.9 m) and a deck 44 ft wide.

Who owns RTE I86 over Mannison Road?

It is owned by the State Highway Agency.