US Bridges

Mill Creek over Mill Creek

Poor

Chelan County, Washington · No Data Entered · Structure no. 061706000001433

Built
1979
46 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
32 ft
1 main span
Daily traffic
25
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

Mill Creek over Mill Creek is a wood or timber stringer/multi-beam or girder carrying Mill Creek over Mill Creek in Chelan County, Washington. It was built in 1979, so it is 46 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 25 vehicles a day, projected to reach 37 by 2045. The structure is 32 ft (9.8 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesMill Creek
CrossesMill Creek
LocationNo Data Entered
RouteFederal Lands Road 69600
Coordinates47.74417, -121.04361
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27 US tons
Inventory rating20.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 10
Structure length32 ft (9.8 m)
Longest span30 ft (9 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1995)
Projected traffic37 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill Creek over Mill Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Mill Creek over Mill Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does Mill Creek over Mill Creek carry?

About 25 vehicles per day (1995 count).

How long is Mill Creek over Mill Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9 m) and a deck 16 ft wide.

Who owns Mill Creek over Mill Creek?

It is owned by the U.S. Forest Service.