US Bridges

Summit Blvd. over Ravine South of Boone Av

Fair

Spokane County, Washington · 01.70 N. I-90 · Structure no. 085835000000000

Built
1909
116 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
50 ft
1 main span
Daily traffic
159
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Summit Blvd. over Ravine South of Boone Av is a concrete culvert carrying Summit Blvd. over Ravine South of Boone Av in Spokane County, Washington. It was built in 1909, so it is 116 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 159 vehicles a day, projected to reach 750 by 2045. The structure is 50 ft (15.2 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSummit Blvd.
CrossesRavine South of Boone Av
Location01.70 N. I-90
RouteCity Street 801
CountySpokane County
StateWashington
Coordinates47.66197, -117.43547
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
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.2 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2022)
Projected traffic750 by 2045
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$950,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Summit Blvd. over Ravine South of Boone Av built?

It was built in 1909, making it 116 years old in 2025.

What condition is Summit Blvd. over Ravine South of Boone Av 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 May 2023.

How much traffic does Summit Blvd. over Ravine South of Boone Av carry?

About 159 vehicles per day (2022 count).

How long is Summit Blvd. over Ravine South of Boone Av?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns Summit Blvd. over Ravine South of Boone Av?

It is owned by the City or Municipal Highway Agency.