US Bridges

Rose Ridge Road over Mill Creek

Fair

Union County, Oregon · 0.10 S of Mill Creek Rd. · Structure no. 22486 000 00010

Built
2015
10 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
80
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rose Ridge Road over Mill Creek is a steel stringer/multi-beam or girder carrying Rose Ridge Road over Mill Creek in Union County, Oregon. It was built in 2015, so it is 10 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 80 vehicles a day, roughly 13% of them trucks, projected to reach 100 by 2033. The structure is 33 ft (10.2 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRose Ridge Road
CrossesMill Creek
Location0.10 S of Mill Creek Rd.
RouteCity Street C0000
CountyUnion County
StateOregon
Coordinates45.29144, -117.80395
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum 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 alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length33 ft (10.2 m)
Longest span32 ft (9.7 m)
Deck width24 ft (7.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2014)
Projected traffic100 by 2033
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Rose Ridge Road over Mill Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Rose Ridge Road 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 September 2023.

How much traffic does Rose Ridge Road over Mill Creek carry?

About 80 vehicles per day (2014 count), of which roughly 13% are trucks.

How long is Rose Ridge Road over Mill Creek?

The structure is 33 ft (10.2 m) long with a longest span of 32 ft (9.7 m) and a deck 24 ft wide.

Who owns Rose Ridge Road over Mill Creek?

It is owned by the City or Municipal Highway Agency.