US Bridges

Charles Road over Spokane River

Fair

Spokane County, Washington · Charles RD Oc · Structure no. 080544000000000

Built
1976
49 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
327 ft
3 main spans
Daily traffic
4,648
2023 count
Owner
County
County Highway Agency

About this bridge

Charles Road over Spokane River is a prestressed concrete continuous stringer/multi-beam or girder carrying Charles Road over Spokane River in Spokane County, Washington. It was built in 1976, so it is 49 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 5 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 4,648 vehicles a day, roughly 13% of them trucks, projected to reach 4,595 by 2041. The structure is 327 ft (99.7 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCharles Road
CrossesSpokane River
LocationCharles RD Oc
RouteCounty Highway 569
Coordinates47.77694, -117.54517
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating41.8 US tons
Inventory rating27.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20 + Mod
Structure length327 ft (99.7 m)
Longest span134 ft (40.8 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,648 (2023)
Projected traffic4,595 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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$12.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Charles Road over Spokane River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Charles Road over 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 2023.

How much traffic does Charles Road over Spokane River carry?

About 4,648 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Charles Road over Spokane River?

The structure is 327 ft (99.7 m) long with a longest span of 134 ft (40.8 m) and a deck 36 ft wide.

Who owns Charles Road over Spokane River?

It is owned by the County Highway Agency.