US Bridges

Maple Hill RD S over Owl Creek

Good

Cowlitz County, Washington · 0.04 S Rose Valley (1.28) · Structure no. 087202000000000

Built
1954
71 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Maple Hill RD S over Owl Creek is a concrete continuous culvert carrying Maple Hill RD S over Owl Creek in Cowlitz County, Washington. It was built in 1954, so it is 71 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 11% of them trucks, projected to reach 135 by 2043. The structure is 21 ft (6.4 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMaple Hill RD S
CrossesOwl Creek
Location0.04 S Rose Valley (1.28)
RouteCounty Highway 42450
Coordinates46.095, -122.84694
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating41 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic135 by 2043
Trucks11%
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Maple Hill RD S over Owl Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Maple Hill RD S over Owl 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 August 2023.

How much traffic does Maple Hill RD S over Owl Creek carry?

About 100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Maple Hill RD S over Owl Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 24 ft wide.

Who owns Maple Hill RD S over Owl Creek?

It is owned by the County Highway Agency.