US Bridges

Eich Road over Skookum Creek

FairPosted for load

Mason County, Washington · 0.26 N JCT SR 108 · Structure no. 083320000000000

Built
1968
57 years old
Condition
Fair
inspected July 2024
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
22
2020 count
Owner
County
County Highway Agency

About this bridge

Eich Road over Skookum Creek is a wood or timber slab carrying Eich Road over Skookum Creek in Mason County, Washington. It was built in 1968, so it is 57 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 22 vehicles a day, roughly 5% of them trucks, projected to reach 25 by 2044. The structure is 30 ft (9.1 m) long and 19 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesEich Road
CrossesSkookum Creek
Location0.26 N JCT SR 108
RouteCounty Highway 11070
CountyMason County
StateWashington
Coordinates47.10967, -123.13778
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 15
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width19 ft (5.8 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22 (2020)
Projected traffic25 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$50,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Eich Road over Skookum Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Eich Road over Skookum 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 July 2024.

How much traffic does Eich Road over Skookum Creek carry?

About 22 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Eich Road over Skookum Creek?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 19 ft wide.

Who owns Eich Road over Skookum Creek?

It is owned by the County Highway Agency.