US Bridges

Elochoman Vly RD over Rock Creek

Good

Wahkiakum County, Washington · 8.50 Miles NE of SR4 · Structure no. 087712000000000

Built
2008
17 years old
Condition
Good
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
184
2013 count
Owner
County
County Highway Agency

About this bridge

Elochoman Vly RD over Rock Creek is a prestressed concrete tee beam carrying Elochoman Vly RD over Rock Creek in Wahkiakum County, Washington. It was built in 2008, so it is 17 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 184 vehicles a day, roughly 12% of them trucks, projected to reach 333 by 2033. The structure is 61 ft (18.6 m) long and 38 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesElochoman Vly RD
CrossesRock Creek
Location8.50 Miles NE of SR4
RouteCounty Highway 93000
Coordinates46.27783, -123.27587
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length61 ft (18.6 m)
Longest span53 ft (16.2 m)
Deck width38 ft (11.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic184 (2013)
Projected traffic333 by 2033
Trucks12%
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 statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$637,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Elochoman Vly RD over Rock Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Elochoman Vly RD over Rock 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 March 2023.

How much traffic does Elochoman Vly RD over Rock Creek carry?

About 184 vehicles per day (2013 count), of which roughly 12% are trucks.

How long is Elochoman Vly RD over Rock Creek?

The structure is 61 ft (18.6 m) long with a longest span of 53 ft (16.2 m) and a deck 38 ft wide.

Who owns Elochoman Vly RD over Rock Creek?

It is owned by the County Highway Agency.