US Bridges

County Road 18 over Dwaar Kill

Fair

Ulster County, New York · 2.0 MI W of Wallkill · Structure no. 000000003346830

Built
1989
36 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
3,916
2014 count
Owner
County
County Highway Agency

About this bridge

County Road 18 over Dwaar Kill is a steel stringer/multi-beam or girder carrying County Road 18 over Dwaar Kill in Ulster County, New York. It was built in 1989, so it is 36 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 5 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 3,916 vehicles a day, roughly 7% of them trucks, projected to reach 5,482 by 2034. The structure is 62 ft (18.9 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 18
CrossesDwaar Kill
Location2.0 MI W of Wallkill
RouteCounty Highway 0
CountyUlster County
StateNew York
Coordinates41.61528, -74.21616
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span57 ft (17.3 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,916 (2014)
Projected traffic5,482 by 2034
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$1.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 18 over Dwaar Kill built?

It was built in 1989, making it 36 years old in 2025.

What condition is County Road 18 over Dwaar Kill 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 August 2024.

How much traffic does County Road 18 over Dwaar Kill carry?

About 3,916 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is County Road 18 over Dwaar Kill?

The structure is 62 ft (18.9 m) long with a longest span of 57 ft (17.3 m) and a deck 27 ft wide.

Who owns County Road 18 over Dwaar Kill?

It is owned by the County Highway Agency.