US Bridges

Wollweber Road over Rock Creek

Good

Lincoln County, Washington · R.04 MI SW FAS L220 · Structure no. 086455000000000

Built
1999
26 years old
Condition
Good
inspected February 2024
Type
Culvert
Steel Continuous
Length
27 ft
1 main span
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Wollweber Road over Rock Creek is a steel continuous culvert carrying Wollweber Road over Rock Creek in Lincoln County, Washington. It was built in 1999, so it is 26 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 50 vehicles a day, roughly 40% of them trucks, projected to reach 100 by 2042. The structure is 27 ft (8.2 m) long and 35 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesWollweber Road
CrossesRock Creek
LocationR.04 MI SW FAS L220
RouteCounty Highway 36450
Coordinates47.439, -118.01561
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating106.8 US tons

Structure

Structure typeCulvert
MaterialSteel Continuous
DeckNot applicable
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span27 ft (8.2 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic100 by 2042
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wollweber Road over Rock Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Wollweber Road over Rock 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 February 2024.

How much traffic does Wollweber Road over Rock Creek carry?

About 50 vehicles per day (2020 count), of which roughly 40% are trucks.

How long is Wollweber Road over Rock Creek?

The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m) and a deck 35 ft wide.

Who owns Wollweber Road over Rock Creek?

It is owned by the County Highway Agency.