US Bridges

SR 129 over Rattlesnake Creek

Good

Asotin County, Washington · 5.8 N Oregon · Structure no. 0018763A0000000

Built
2015
10 years old
Condition
Good
inspected September 2023
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
318
2023 count
Owner
State
State Highway Agency

About this bridge

SR 129 over Rattlesnake Creek is a concrete frame carrying SR 129 over Rattlesnake Creek in Asotin County, Washington. It was built in 2015, so it is 10 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 318 vehicles a day, roughly 21% of them trucks, projected to reach 372 by 2039. The structure is 25 ft (7.6 m) long and 56 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 129
CrossesRattlesnake Creek
Location5.8 N Oregon
RouteState Highway 129
CountyAsotin County
StateWashington
Coordinates46.05717, -117.23786
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating42.1 US tons
Inventory rating32.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width56 ft (17.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic318 (2023)
Projected traffic372 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 129 over Rattlesnake Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is SR 129 over Rattlesnake Creek 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 2023.

How much traffic does SR 129 over Rattlesnake Creek carry?

About 318 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is SR 129 over Rattlesnake Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 56 ft wide.

Who owns SR 129 over Rattlesnake Creek?

It is owned by the State Highway Agency.