US Bridges

Maki Road over Middle Valley Creek

Good

Wahkiakum County, Washington · 0.1 E Mid. Val. RD · Structure no. 084295000000000

Built
1967
58 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
75 ft
3 main spans
Daily traffic
51
2014 count
Owner
County
County Highway Agency

About this bridge

Maki Road over Middle Valley Creek is a concrete continuous slab carrying Maki Road over Middle Valley Creek in Wahkiakum County, Washington. It was built in 1967, so it is 58 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 51 vehicles a day, roughly 5% of them trucks, projected to reach 93 by 2034. The structure is 75 ft (22.9 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMaki Road
CrossesMiddle Valley Creek
Location0.1 E Mid. Val. RD
RouteCounty Highway 12620
Coordinates46.29944, -123.44389
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length75 ft (22.9 m)
Longest span27 ft (8.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2014)
Projected traffic93 by 2034
Trucks5%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$926,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Maki Road over Middle Valley Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Maki Road over Middle Valley 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 March 2023.

How much traffic does Maki Road over Middle Valley Creek carry?

About 51 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Maki Road over Middle Valley Creek?

The structure is 75 ft (22.9 m) long with a longest span of 27 ft (8.2 m) and a deck 26 ft wide.

Who owns Maki Road over Middle Valley Creek?

It is owned by the County Highway Agency.