US Bridges

Mandee Lane over Wiley Creek

Good

Linn County, Oregon · 1.0 MI S. of Foster · Structure no. 18005 000000003

Built
1995
30 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
72
2021 count
Owner
County
County Highway Agency

About this bridge

Mandee Lane over Wiley Creek is a prestressed concrete box beam or girders - multiple carrying Mandee Lane over Wiley Creek in Linn County, Oregon. It was built in 1995, so it is 30 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 72 vehicles a day, projected to reach 103 by 2041. The structure is 101 ft (30.8 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMandee Lane
CrossesWiley Creek
Location1.0 MI S. of Foster
RouteCounty Highway C3904
StateOregon
Coordinates44.39887, -122.66124
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span99 ft (30.2 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic72 (2021)
Projected traffic103 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Mandee Lane over Wiley Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Mandee Lane over Wiley 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 June 2023.

How much traffic does Mandee Lane over Wiley Creek carry?

About 72 vehicles per day (2021 count).

How long is Mandee Lane over Wiley Creek?

The structure is 101 ft (30.8 m) long with a longest span of 99 ft (30.2 m) and a deck 16 ft wide.

Who owns Mandee Lane over Wiley Creek?

It is owned by the County Highway Agency.