US Bridges

Eich Road over Little Skookum Creek

Good

Mason County, Washington · 0.15 N JCT SR 108 · Structure no. 087178000000000

Built
2004
21 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
22
2020 count
Owner
County
County Highway Agency

About this bridge

Eich Road over Little Skookum Creek is a prestressed concrete slab carrying Eich Road over Little Skookum Creek in Mason County, Washington. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22 vehicles a day, roughly 5% of them trucks, projected to reach 30 by 2044. The structure is 31 ft (9.4 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesEich Road
CrossesLittle Skookum Creek
Location0.15 N JCT SR 108
RouteCounty Highway 11070
Coordinates47.10808, -123.138
Functional classRural Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span28 ft (8.4 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22 (2020)
Projected traffic30 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$233,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Eich Road over Little Skookum Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Eich Road over Little Skookum 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 July 2024.

How much traffic does Eich Road over Little Skookum Creek carry?

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

How long is Eich Road over Little Skookum Creek?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.4 m) and a deck 17 ft wide.

Who owns Eich Road over Little Skookum Creek?

It is owned by the County Highway Agency.