US Bridges

Dodson Road over West Canal Blk 86

Good

Grant County, Washington · Dodson RD .4 N of 11 SW · Structure no. 086060000000000

Built
1993
32 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
2,266
2023 count
Owner
County
County Highway Agency

About this bridge

Dodson Road over West Canal Blk 86 is a prestressed concrete stringer/multi-beam or girder carrying Dodson Road over West Canal Blk 86 in Grant County, Washington. It was built in 1993, so it is 32 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 2,266 vehicles a day, roughly 22% of them trucks, projected to reach 2,650 by 2044. The structure is 56 ft (17.1 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesDodson Road
CrossesWest Canal Blk 86
LocationDodson RD .4 N of 11 SW
RouteCounty Highway 91030
Coordinates46.93456, -119.55785
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating22.5 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width34 ft (10.4 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,266 (2023)
Projected traffic2,650 by 2044
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$2.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dodson Road over West Canal Blk 86 built?

It was built in 1993, making it 32 years old in 2025.

What condition is Dodson Road over West Canal Blk 86 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 January 2024.

How much traffic does Dodson Road over West Canal Blk 86 carry?

About 2,266 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is Dodson Road over West Canal Blk 86?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 34 ft wide.

Who owns Dodson Road over West Canal Blk 86?

It is owned by the County Highway Agency.