US Bridges

Plank Road over Eighteen Mile Crk

Fair

Niagara County, New York · 1.6 MI NW JCT SH78 &canal · Structure no. 000000003362320

Built
1988
37 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
1,278
2019 count
Owner
County
County Highway Agency

About this bridge

Plank Road over Eighteen Mile Crk is a prestressed concrete box beam or girders - multiple carrying Plank Road over Eighteen Mile Crk in Niagara County, New York. It was built in 1988, so it is 37 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 1,278 vehicles a day, roughly 3% of them trucks, projected to reach 1,581 by 2041. The structure is 61 ft (18.6 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesPlank Road
CrossesEighteen Mile Crk
Location1.6 MI NW JCT SH78 &canal
RouteCounty Highway 0
CountyNiagara County
StateNew York
Coordinates43.18939, -78.70555
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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 rating85 US tons
Inventory rating32 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length61 ft (18.6 m)
Longest span60 ft (18.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,278 (2019)
Projected traffic1,581 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$816,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Plank Road over Eighteen Mile Crk built?

It was built in 1988, making it 37 years old in 2025.

What condition is Plank Road over Eighteen Mile Crk 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 October 2024.

How much traffic does Plank Road over Eighteen Mile Crk carry?

About 1,278 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Plank Road over Eighteen Mile Crk?

The structure is 61 ft (18.6 m) long with a longest span of 60 ft (18.2 m) and a deck 32 ft wide.

Who owns Plank Road over Eighteen Mile Crk?

It is owned by the County Highway Agency.