US Bridges

Dobson Road over Crab Creek

Good

Lincoln County, Washington · .05 E of SR28 · Structure no. 087236000000000

Built
2005
20 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
191 ft
3 main spans
Daily traffic
282
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dobson Road over Crab Creek is a prestressed concrete stringer/multi-beam or girder carrying Dobson Road over Crab Creek in Lincoln County, Washington. It was built in 2005, so it is 20 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 282 vehicles a day, roughly 40% of them trucks, projected to reach 275 by 2040. The structure is 191 ft (58.2 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesDobson Road
CrossesCrab Creek
Location.05 E of SR28
RouteCity Street 21140
Coordinates47.3333, -118.67728
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 inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating35.4 US tons
Inventory rating27.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length191 ft (58.2 m)
Longest span64 ft (19.5 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic282 (2018)
Projected traffic275 by 2040
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal 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 Dobson Road over Crab Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Dobson Road over Crab 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 2022.

How much traffic does Dobson Road over Crab Creek carry?

About 282 vehicles per day (2018 count), of which roughly 40% are trucks.

How long is Dobson Road over Crab Creek?

The structure is 191 ft (58.2 m) long with a longest span of 64 ft (19.5 m) and a deck 36 ft wide.

Who owns Dobson Road over Crab Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.