US Bridges

Garden Spring RD over I-90

Fair

Spokane County, Washington · 0.5 E JCT US 2 · Structure no. 0007072A0000000

Built
1963
62 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
240 ft
4 main spans
Daily traffic
966
2020 count
Owner
State
State Highway Agency

About this bridge

Garden Spring RD over I-90 is a prestressed concrete stringer/multi-beam or girder carrying Garden Spring RD over I-90 in Spokane County, Washington. It was built in 1963, so it is 62 years old, older 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 966 vehicles a day, roughly 10% of them trucks, projected to reach 1,301 by 2040. The structure is 240 ft (73.2 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesGarden Spring RD
CrossesI-90
Location0.5 E JCT US 2
RouteCounty Highway 0
CountySpokane County
StateWashington
Coordinates47.63725, -117.47192
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span85 ft (25.9 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic966 (2020)
Projected traffic1,301 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Garden Spring RD over I-90 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Garden Spring RD over I-90 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 September 2023.

How much traffic does Garden Spring RD over I-90 carry?

About 966 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Garden Spring RD over I-90?

The structure is 240 ft (73.2 m) long with a longest span of 85 ft (25.9 m) and a deck 32 ft wide.

Who owns Garden Spring RD over I-90?

It is owned by the State Highway Agency.