US Bridges

Hendrickson Road over Stillwater Creek

FairPosted for load

Lewis County, Washington · 2.0 W Vader · Structure no. 083449000000000

Built
1927
98 years old, rebuilt 1979
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel
Length
157 ft
1 main span
Daily traffic
78
2019 count
Owner
County
County Highway Agency

About this bridge

Hendrickson Road over Stillwater Creek is a steel truss - thru carrying Hendrickson Road over Stillwater Creek in Lewis County, Washington. It was built in 1927 and reconstructed in 1979, so it is 98 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. Its operating status is: posted for load restriction.

It carries about 78 vehicles a day, roughly 10% of them trucks, projected to reach 141 by 2039. The structure is 157 ft (47.9 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesHendrickson Road
CrossesStillwater Creek
Location2.0 W Vader
RouteCounty Highway 35100
Coordinates46.405, -123.02047
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+4 approach)
Design loadH 15
Structure length157 ft (47.9 m)
Longest span80 ft (24.4 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78 (2019)
Projected traffic141 by 2039
Trucks10%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hendrickson Road over Stillwater Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1979.

What condition is Hendrickson Road over Stillwater 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 March 2023.

How much traffic does Hendrickson Road over Stillwater Creek carry?

About 78 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Hendrickson Road over Stillwater Creek?

The structure is 157 ft (47.9 m) long with a longest span of 80 ft (24.4 m) and a deck 18 ft wide.

Who owns Hendrickson Road over Stillwater Creek?

It is owned by the County Highway Agency.