US Bridges

Pleasant Hill RD over Salmon Creek

Good

Cowlitz County, Washington · 1.5 Miles N of Hq Road · Structure no. 089366000000000

Built
2021
4 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
525
2020 count
Owner
County
County Highway Agency

About this bridge

Pleasant Hill RD over Salmon Creek is a steel stringer/multi-beam or girder carrying Pleasant Hill RD over Salmon Creek in Cowlitz County, Washington. It was built in 2021, so it is 4 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. Its operating status is: open, temporary structure in place while original is closed.

It carries about 525 vehicles a day, roughly 2% of them trucks, projected to reach 725 by 2040. The structure is 80 ft (24.4 m) long and 17 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesPleasant Hill RD
CrossesSalmon Creek
Location1.5 Miles N of Hq Road
RouteCounty Highway 50500
Coordinates46.255, -122.885
Functional classRural Minor Collector

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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations on dry land well above flood water elevations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 25 or greater
Structure length80 ft (24.4 m)
Longest span79 ft (24.1 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2020)
Projected traffic725 by 2040
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pleasant Hill RD over Salmon Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is Pleasant Hill RD over Salmon 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 January 2023.

How much traffic does Pleasant Hill RD over Salmon Creek carry?

About 525 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Pleasant Hill RD over Salmon Creek?

The structure is 80 ft (24.4 m) long with a longest span of 79 ft (24.1 m) and a deck 17 ft wide.

Who owns Pleasant Hill RD over Salmon Creek?

It is owned by the County Highway Agency.