US Bridges

Coal Creek Road over Coal Creek

Good

Lewis County, Washington · 1.8 E Chehalis · Structure no. 083798000000000

Built
1976
49 years old
Condition
Good
inspected January 2023
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
1,047
2022 count
Owner
County
County Highway Agency

About this bridge

Coal Creek Road over Coal Creek is a prestressed concrete slab carrying Coal Creek Road over Coal Creek in Lewis County, Washington. It was built in 1976, so it is 49 years old, younger than the Washington average of 49.8 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 1,047 vehicles a day, roughly 13% of them trucks, projected to reach 1,891 by 2042. The structure is 30 ft (9.1 m) long and 33 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesCoal Creek Road
CrossesCoal Creek
Location1.8 E Chehalis
RouteCounty Highway 91005
Coordinates46.66437, -122.93674
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,047 (2022)
Projected traffic1,891 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$342,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Coal Creek Road over Coal Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Coal Creek Road over Coal 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 January 2023.

How much traffic does Coal Creek Road over Coal Creek carry?

About 1,047 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Coal Creek Road over Coal Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 33 ft wide.

Who owns Coal Creek Road over Coal Creek?

It is owned by the County Highway Agency.