US Bridges

Hart RD over Spring Valley

Good

Walla Walla County, Washington · 0.18 N Lwr Waitsburg RD · Structure no. 088683000000000

Built
2014
11 years old
Condition
Good
inspected September 2024
Type
Slab
Wood or Timber
Length
36 ft
1 main span
Daily traffic
210
2024 count
Owner
County
County Highway Agency

About this bridge

Hart RD over Spring Valley is a wood or timber slab carrying Hart RD over Spring Valley in Walla Walla County, Washington. It was built in 2014, so it is 11 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 210 vehicles a day, roughly 24% of them trucks, projected to reach 260 by 2046. The structure is 36 ft (11 m) long and 50 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesHart RD
CrossesSpring Valley
Location0.18 N Lwr Waitsburg RD
RouteCounty Highway 96650
Coordinates46.1784, -118.30457
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHL 93
Structure length36 ft (11 m)
Longest span33 ft (10.2 m)
Deck width50 ft (15.2 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2024)
Projected traffic260 by 2046
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hart RD over Spring Valley built?

It was built in 2014, making it 11 years old in 2025.

What condition is Hart RD over Spring Valley 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 Hart RD over Spring Valley carry?

About 210 vehicles per day (2024 count), of which roughly 24% are trucks.

How long is Hart RD over Spring Valley?

The structure is 36 ft (11 m) long with a longest span of 33 ft (10.2 m) and a deck 50 ft wide.

Who owns Hart RD over Spring Valley?

It is owned by the County Highway Agency.