US Bridges

Rock ST over China Creek

Fair

Lewis County, Washington · .1 N Jct. FAS1027 · Structure no. 085100000000000

Built
1941
84 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
272
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rock ST over China Creek is a concrete continuous slab carrying Rock ST over China Creek in Lewis County, Washington. It was built in 1941, so it is 84 years old, older 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 272 vehicles a day, roughly 9% of them trucks, projected to reach 420 by 2043. The structure is 28 ft (8.5 m) long and 60 ft wide.

Location

Open in Google Maps
CarriesRock ST
CrossesChina Creek
Location.1 N Jct. FAS1027
RouteCity Street 18018
CountyLewis County
StateWashington
Coordinates46.71778, -122.95861
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 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 geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length28 ft (8.5 m)
Longest span13 ft (4 m)
Deck width60 ft (18.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic272 (2022)
Projected traffic420 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rock ST over China Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is Rock ST over China Creek 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 November 2023.

How much traffic does Rock ST over China Creek carry?

About 272 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Rock ST over China Creek?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (4 m) and a deck 60 ft wide.

Who owns Rock ST over China Creek?

It is owned by the City or Municipal Highway Agency.