US Bridges

Illinois River RD over Anderson Creek

Good

Josephine County, Oregon · 0.5 MI W of Selma · Structure no. 18288 507005006

Built
1998
27 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
2,464
2020 count
Owner
County
County Highway Agency

About this bridge

Illinois River RD over Anderson Creek is a prestressed concrete slab carrying Illinois River RD over Anderson Creek in Josephine County, Oregon. It was built in 1998, so it is 27 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,464 vehicles a day, roughly 10% of them trucks, projected to reach 2,899 by 2025. The structure is 55 ft (16.8 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIllinois River RD
CrossesAnderson Creek
Location0.5 MI W of Selma
RouteCounty Highway C5070
StateOregon
Coordinates42.27926, -123.6173
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length55 ft (16.8 m)
Longest span53 ft (16.2 m)
Deck width36 ft (11 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,464 (2020)
Projected traffic2,899 by 2025
Trucks10%
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

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 Illinois River RD over Anderson Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Illinois River RD over Anderson 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 October 2024.

How much traffic does Illinois River RD over Anderson Creek carry?

About 2,464 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Illinois River RD over Anderson Creek?

The structure is 55 ft (16.8 m) long with a longest span of 53 ft (16.2 m) and a deck 36 ft wide.

Who owns Illinois River RD over Anderson Creek?

It is owned by the County Highway Agency.