US Bridges

Harvard Road over Spokane River

Good

Spokane County, Washington · 0.1 S Euclid Road · Structure no. 086317000000000

Built
1997
28 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
458 ft
3 main spans
Daily traffic
13,680
2020 count
Owner
County
County Highway Agency

About this bridge

Harvard Road over Spokane River is a prestressed concrete continuous stringer/multi-beam or girder carrying Harvard Road over Spokane River in Spokane County, Washington. It was built in 1997, so it is 28 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 13,680 vehicles a day, roughly 12% of them trucks, projected to reach 19,699 by 2042. The structure is 458 ft (139.5 m) long and 74 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesHarvard Road
CrossesSpokane River
Location0.1 S Euclid Road
RouteCounty Highway 1741
Coordinates47.68314, -117.11125
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating11.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 25 or greater
Structure length458 ft (139.5 m)
Longest span166 ft (50.6 m)
Deck width74 ft (22.5 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,680 (2020)
Projected traffic19,699 by 2042
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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$13.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Harvard Road over Spokane River built?

It was built in 1997, making it 28 years old in 2025.

What condition is Harvard Road over Spokane River 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 September 2024.

How much traffic does Harvard Road over Spokane River carry?

About 13,680 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is Harvard Road over Spokane River?

The structure is 458 ft (139.5 m) long with a longest span of 166 ft (50.6 m) and a deck 74 ft wide.

Who owns Harvard Road over Spokane River?

It is owned by the County Highway Agency.