US Bridges

Mid. Fork Mill Cr. over Middle Fork Mill Creek

Good

Stevens County, Washington · 2.8 NE South Fork Mill CR · Structure no. 089325000000000

Built
2022
3 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
18
2024 count
Owner
County
County Highway Agency

About this bridge

Mid. Fork Mill Cr. over Middle Fork Mill Creek is a prestressed concrete slab carrying Mid. Fork Mill Cr. over Middle Fork Mill Creek in Stevens County, Washington. It was built in 2022, so it is 3 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 18 vehicles a day, roughly 5% of them trucks, projected to reach 20 by 2042. The structure is 50 ft (15.2 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesMid. Fork Mill Cr.
CrossesMiddle Fork Mill Creek
Location2.8 NE South Fork Mill CR
RouteCounty Highway 46680
CountyStevens County
StateWashington
Coordinates48.64962, -117.72307
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.2 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span47 ft (14.3 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18 (2024)
Projected traffic20 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Mid. Fork Mill Cr. over Middle Fork Mill Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Mid. Fork Mill Cr. over Middle Fork Mill 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 2024.

How much traffic does Mid. Fork Mill Cr. over Middle Fork Mill Creek carry?

About 18 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mid. Fork Mill Cr. over Middle Fork Mill Creek?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 24 ft wide.

Who owns Mid. Fork Mill Cr. over Middle Fork Mill Creek?

It is owned by the County Highway Agency.