US Bridges

Cline Road over Kilborn CR

Fair

Lewis County, Washington · 8.0 E Randal · Structure no. 086516000000000

Built
2000
25 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

Cline Road over Kilborn CR is a prestressed concrete stringer/multi-beam or girder carrying Cline Road over Kilborn CR in Lewis County, Washington. It was built in 2000, so it is 25 years old, younger than the Washington average of 49.8 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 45 vehicles a day, roughly 24% of them trucks, projected to reach 82 by 2042. The structure is 50 ft (15.2 m) long and 31 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesCline Road
CrossesKilborn CR
Location8.0 E Randal
RouteCounty Highway 70601
CountyLewis County
StateWashington
Coordinates46.51626, -121.8071
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic82 by 2042
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$712,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cline Road over Kilborn CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is Cline Road over Kilborn CR 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 January 2023.

How much traffic does Cline Road over Kilborn CR carry?

About 45 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is Cline Road over Kilborn CR?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 31 ft wide.

Who owns Cline Road over Kilborn CR?

It is owned by the County Highway Agency.