US Bridges

Mill CR RD over North Fork Mill Creek

Fair

Wasco County, Oregon · 11.0 MI on Mill CR Road · Structure no. 16167 509 00440

Built
1975
50 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
15
2020 count
Owner
County
County Highway Agency

About this bridge

Mill CR RD over North Fork Mill Creek is a prestressed concrete slab carrying Mill CR RD over North Fork Mill Creek in Wasco County, Oregon. It was built in 1975, so it is 50 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15 vehicles a day, projected to reach 17 by 2025. The structure is 40 ft (12.2 m) long and 20 ft wide.

CarriesMill CR RD
CrossesNorth Fork Mill Creek
Location11.0 MI on Mill CR Road
RouteCounty Highway 0
StateOregon
Coordinates45.53451, -121.40227
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span37 ft (11.3 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2020)
Projected traffic17 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill CR RD over North Fork Mill Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Mill CR RD over North Fork Mill Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Mill CR RD over North Fork Mill Creek carry?

About 15 vehicles per day (2020 count).

How long is Mill CR RD over North Fork Mill Creek?

The structure is 40 ft (12.2 m) long with a longest span of 37 ft (11.3 m) and a deck 20 ft wide.

Who owns Mill CR RD over North Fork Mill Creek?

It is owned by the County Highway Agency.