US Bridges

W. Bulb Farm Rd. over Cloquallum Creek

Poor

Mason County, Washington · 0.35 S JCT Cloquallum RD · Structure no. 081691000000000

Built
1961
64 years old, rebuilt 1971
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
3 main spans
Daily traffic
62
2020 count
Owner
County
County Highway Agency

About this bridge

W. Bulb Farm Rd. over Cloquallum Creek is a wood or timber stringer/multi-beam or girder carrying W. Bulb Farm Rd. over Cloquallum Creek in Mason County, Washington. It was built in 1961 and reconstructed in 1971, so it is 64 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 62 vehicles a day, roughly 10% of them trucks, projected to reach 100 by 2044. The structure is 52 ft (15.8 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesW. Bulb Farm Rd.
CrossesCloquallum Creek
Location0.35 S JCT Cloquallum RD
RouteCounty Highway 10290
Coordinates47.13503, -123.26889
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span18 ft (5.4 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62 (2020)
Projected traffic100 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$110,000
NavigationNo navigation control on waterway

Frequently asked questions

When was W. Bulb Farm Rd. over Cloquallum Creek built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1971.

What condition is W. Bulb Farm Rd. over Cloquallum Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does W. Bulb Farm Rd. over Cloquallum Creek carry?

About 62 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is W. Bulb Farm Rd. over Cloquallum Creek?

The structure is 52 ft (15.8 m) long with a longest span of 18 ft (5.4 m) and a deck 16 ft wide.

Who owns W. Bulb Farm Rd. over Cloquallum Creek?

It is owned by the County Highway Agency.