US Bridges

Miekler RD over Hill Creek

Good

Cowlitz County, Washington · 0.08 W Imboden RD (0.16) · Structure no. 087577000000000

Built
2006
19 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
53
2019 count
Owner
County
County Highway Agency

About this bridge

Miekler RD over Hill Creek is a prestressed concrete slab carrying Miekler RD over Hill Creek in Cowlitz County, Washington. It was built in 2006, so it is 19 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 53 vehicles a day, roughly 2% of them trucks, projected to reach 75 by 2040. The structure is 74 ft (22.6 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMiekler RD
CrossesHill Creek
Location0.08 W Imboden RD (0.16)
RouteCounty Highway 57400
Coordinates46.36722, -122.92944
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.8 US tons
Inventory rating47.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length74 ft (22.6 m)
Longest span71 ft (21.6 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2019)
Projected traffic75 by 2040
Trucks2%
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$703,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Miekler RD over Hill Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Miekler RD over Hill 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 September 2023.

How much traffic does Miekler RD over Hill Creek carry?

About 53 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Miekler RD over Hill Creek?

The structure is 74 ft (22.6 m) long with a longest span of 71 ft (21.6 m) and a deck 28 ft wide.

Who owns Miekler RD over Hill Creek?

It is owned by the County Highway Agency.