US Bridges

RTE 18 over State Park Road

Good

Niagara County, New York · 3.8 MI N JCT Rts 18F +104 · Structure no. 000000005060080

Built
1968
57 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
31 ft
1 main span
Daily traffic
2,904
2020 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

RTE 18 over State Park Road is a concrete culvert carrying RTE 18 over State Park Road in Niagara County, New York. It was built in 1968, so it is 57 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,904 vehicles a day, roughly 3% of them trucks, projected to reach 3,066 by 2041. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 2.5 mi (4 km).

CarriesRTE 18
CrossesState Park Road
Location3.8 MI N JCT Rts 18F +104
RouteCounty Highway 18
Coordinates43.2149, -79.04956
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating86.8 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,904 (2020)
Projected traffic3,066 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$379,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 18 over State Park Road built?

It was built in 1968, making it 57 years old in 2025.

What condition is RTE 18 over State Park Road 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 September 2024.

How much traffic does RTE 18 over State Park Road carry?

About 2,904 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is RTE 18 over State Park Road?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m).

Who owns RTE 18 over State Park Road?

It is owned by the State Park, Forest, or Reservation Agency.