US Bridges

Crown Camp Road over Duck Creek

Good

Wahkiakum County, Washington · MP 0.57 Crown Camp Rd. · Structure no. 087704000000000

Built
2007
18 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
63
2014 count
Owner
County
County Highway Agency

About this bridge

Crown Camp Road over Duck Creek is a prestressed concrete tee beam carrying Crown Camp Road over Duck Creek in Wahkiakum County, Washington. It was built in 2007, so it is 18 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 63 vehicles a day, roughly 5% of them trucks, projected to reach 113 by 2034. The structure is 55 ft (16.8 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCrown Camp Road
CrossesDuck Creek
LocationMP 0.57 Crown Camp Rd.
RouteCounty Highway 13790
Coordinates46.2515, -123.31703
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length55 ft (16.8 m)
Longest span55 ft (16.8 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2014)
Projected traffic113 by 2034
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$940,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Crown Camp Road over Duck Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Crown Camp Road over Duck 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 November 2024.

How much traffic does Crown Camp Road over Duck Creek carry?

About 63 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Crown Camp Road over Duck Creek?

The structure is 55 ft (16.8 m) long with a longest span of 55 ft (16.8 m) and a deck 27 ft wide.

Who owns Crown Camp Road over Duck Creek?

It is owned by the County Highway Agency.