US Bridges

Dartford Drive over Little Spokane River

Fair

Spokane County, Washington · Dartford Drive · Structure no. 086636000000000

Built
2001
24 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
149 ft
1 main span
Daily traffic
1,908
2019 count
Owner
County
County Highway Agency

About this bridge

Dartford Drive over Little Spokane River is a steel stringer/multi-beam or girder carrying Dartford Drive over Little Spokane River in Spokane County, Washington. It was built in 2001, so it is 24 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,908 vehicles a day, roughly 22% of them trucks, projected to reach 2,747 by 2041. The structure is 149 ft (45.4 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesDartford Drive
CrossesLittle Spokane River
LocationDartford Drive
RouteCounty Highway 823
CountySpokane County
StateWashington
Coordinates47.78348, -117.41579
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length149 ft (45.4 m)
Longest span142 ft (43.3 m)
Deck width42 ft (12.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,908 (2019)
Projected traffic2,747 by 2041
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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$2.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dartford Drive over Little Spokane River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Dartford Drive over Little Spokane River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Dartford Drive over Little Spokane River carry?

About 1,908 vehicles per day (2019 count), of which roughly 22% are trucks.

How long is Dartford Drive over Little Spokane River?

The structure is 149 ft (45.4 m) long with a longest span of 142 ft (43.3 m) and a deck 42 ft wide.

Who owns Dartford Drive over Little Spokane River?

It is owned by the County Highway Agency.