US Bridges

Mill CR RD over Mill Creek

Fair

Marion County, Oregon · 00.1 East of Turner · Structure no. 20620 028 00778

Built
2006
19 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
81 ft
1 main span
Daily traffic
7,570
2020 count
Owner
County
County Highway Agency

About this bridge

Mill CR RD over Mill Creek is a prestressed concrete slab carrying Mill CR RD over Mill Creek in Marion County, Oregon. It was built in 2006, so it is 19 years old, younger 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 7,570 vehicles a day, roughly 3% of them trucks, projected to reach 9,065 by 2025. The structure is 81 ft (24.7 m) long and 52 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMill CR RD
CrossesMill Creek
Location00.1 East of Turner
RouteCounty Highway C0028
StateOregon
Coordinates44.84208, -122.94637
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating92 US tons
Inventory rating55 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length81 ft (24.7 m)
Longest span80 ft (24.4 m)
Deck width52 ft (15.9 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,570 (2020)
Projected traffic9,065 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill CR RD over Mill Creek built?

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

What condition is Mill CR RD over 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 Mill Creek carry?

About 7,570 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Mill CR RD over Mill Creek?

The structure is 81 ft (24.7 m) long with a longest span of 80 ft (24.4 m) and a deck 52 ft wide.

Who owns Mill CR RD over Mill Creek?

It is owned by the County Highway Agency.