US Bridges

Rock Creek RD over Rock Cr.

Fair

Lewis County, Washington · 2.5 SW Pe Ell · Structure no. 080236000000000

Built
1985
40 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
76 ft
2 main spans
Daily traffic
17
2017 count
Owner
County
County Highway Agency

About this bridge

Rock Creek RD over Rock Cr. is a prestressed concrete stringer/multi-beam or girder carrying Rock Creek RD over Rock Cr. in Lewis County, Washington. It was built in 1985, so it is 40 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 17 vehicles a day, roughly 12% of them trucks, projected to reach 31 by 2037. The structure is 76 ft (23.2 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesRock Creek RD
CrossesRock Cr.
Location2.5 SW Pe Ell
RouteCounty Highway 26200
CountyLewis County
StateWashington
Coordinates46.54973, -123.3417
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span36 ft (11 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (2017)
Projected traffic31 by 2037
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$650,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rock Creek RD over Rock Cr. built?

It was built in 1985, making it 40 years old in 2025.

What condition is Rock Creek RD over Rock 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 December 2022.

How much traffic does Rock Creek RD over Rock Cr. carry?

About 17 vehicles per day (2017 count), of which roughly 12% are trucks.

How long is Rock Creek RD over Rock Cr.?

The structure is 76 ft (23.2 m) long with a longest span of 36 ft (11 m) and a deck 17 ft wide.

Who owns Rock Creek RD over Rock Cr.?

It is owned by the County Highway Agency.