US Bridges

RTE 18 over Johnson Creek

Good

Orleans County, New York · JCT RTE 18 & Johnson Crk · Structure no. 000000001014710

Built
1995
30 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
107 ft
1 main span
Daily traffic
860
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 18 over Johnson Creek is a prestressed concrete box beam or girders - multiple carrying RTE 18 over Johnson Creek in Orleans County, New York. It was built in 1995, so it is 30 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 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 860 vehicles a day, roughly 10% of them trucks, projected to reach 865 by 2041. The structure is 107 ft (32.5 m) long and 34 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

CarriesRTE 18
CrossesJohnson Creek
LocationJCT RTE 18 & Johnson Crk
RouteState Highway 18
Coordinates43.36071, -78.26458
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length107 ft (32.5 m)
Longest span103 ft (31.3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic860 (2020)
Projected traffic865 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 km)
TollOn a free road
National Highway SystemNo

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$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 18 over Johnson Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is RTE 18 over Johnson Creek 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 June 2023.

How much traffic does RTE 18 over Johnson Creek carry?

About 860 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is RTE 18 over Johnson Creek?

The structure is 107 ft (32.5 m) long with a longest span of 103 ft (31.3 m) and a deck 34 ft wide.

Who owns RTE 18 over Johnson Creek?

It is owned by the State Highway Agency.