US Bridges

SR 410 over Milk Creek

Fair

Yakima County, Washington · 23.5 E Pierce CO · Structure no. 000000KH0000000

Built
1939
86 years old
Condition
Fair
inspected September 2023
Type
Slab
Wood or Timber
Length
38 ft
3 main spans
Daily traffic
881
2023 count
Owner
State
State Highway Agency

About this bridge

SR 410 over Milk Creek is a wood or timber slab carrying SR 410 over Milk Creek in Yakima County, Washington. It was built in 1939, so it is 86 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 5 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 881 vehicles a day, roughly 5% of them trucks, projected to reach 1,086 by 2039. The structure is 38 ft (11.6 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 410
CrossesMilk Creek
Location23.5 E Pierce CO
RouteState Highway 410
CountyYakima County
StateWashington
Coordinates46.98265, -121.09372
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating99 US tons
Inventory rating75 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length38 ft (11.6 m)
Longest span16 ft (4.9 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic881 (2023)
Projected traffic1,086 by 2039
Trucks5%
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$560,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 410 over Milk Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is SR 410 over Milk Creek 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 SR 410 over Milk Creek carry?

About 881 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 410 over Milk Creek?

The structure is 38 ft (11.6 m) long with a longest span of 16 ft (4.9 m) and a deck 32 ft wide.

Who owns SR 410 over Milk Creek?

It is owned by the State Highway Agency.