US Bridges

Mitchum Road over Coal Creek

Fair

Lincoln County, Washington · 3.93 SW SR 28 · Structure no. 080093000000000

Built
1912
113 years old, rebuilt 1983
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
61 ft
1 main span
Daily traffic
10
2021 count
Owner
County
County Highway Agency

About this bridge

Mitchum Road over Coal Creek is a concrete stringer/multi-beam or girder carrying Mitchum Road over Coal Creek in Lincoln County, Washington. It was built in 1912 and reconstructed in 1983, so it is 113 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 10 vehicles a day, roughly 40% of them trucks, projected to reach 40 by 2042. The structure is 61 ft (18.6 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMitchum Road
CrossesCoal Creek
Location3.93 SW SR 28
RouteCounty Highway 25920
Coordinates47.43506, -118.28842
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.
Superstructure8 Very GoodNo problems noted.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating32.5 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span58 ft (17.7 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2021)
Projected traffic40 by 2042
Trucks40%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mitchum Road over Coal Creek built?

It was built in 1912, making it 113 years old in 2025. It was reconstructed in 1983.

What condition is Mitchum Road over Coal 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 Mitchum Road over Coal Creek carry?

About 10 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is Mitchum Road over Coal Creek?

The structure is 61 ft (18.6 m) long with a longest span of 58 ft (17.7 m) and a deck 20 ft wide.

Who owns Mitchum Road over Coal Creek?

It is owned by the County Highway Agency.