US Bridges

Concrete-Sauk Vly over Miller Creek

Good

Skagit County, Washington · 9 MI SE of SR 20 · Structure no. 086552000000000

Built
1999
26 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
158
2021 count
Owner
County
County Highway Agency

About this bridge

Concrete-Sauk Vly over Miller Creek is a concrete culvert carrying Concrete-Sauk Vly over Miller Creek in Skagit 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 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 158 vehicles a day, roughly 16% of them trucks, projected to reach 193 by 2041. The structure is 28 ft (8.4 m) long. If it were closed, the detour would be 37.3 mi (60 km).

CarriesConcrete-Sauk Vly
CrossesMiller Creek
Location9 MI SE of SR 20
RouteCounty Highway 8000
Coordinates48.48428, -121.65453
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length28 ft (8.4 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158 (2021)
Projected traffic193 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$395,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Concrete-Sauk Vly over Miller Creek built?

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

What condition is Concrete-Sauk Vly over Miller 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 June 2024.

How much traffic does Concrete-Sauk Vly over Miller Creek carry?

About 158 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is Concrete-Sauk Vly over Miller Creek?

The structure is 28 ft (8.4 m) long with a longest span of 26 ft (7.9 m).

Who owns Concrete-Sauk Vly over Miller Creek?

It is owned by the County Highway Agency.