US Bridges

US 20 (hwy 16) over Trout Creek

Good

Linn County, Oregon · 217 MI E HWY 212 JCT · Structure no. 18731 016 04882

Built
2003
22 years old
Condition
Good
inspected February 2024
Type
Slab
Prestressed Concrete
Length
59 ft
1 main span
Daily traffic
1,091
2022 count
Owner
State
State Highway Agency

About this bridge

US 20 (hwy 16) over Trout Creek is a prestressed concrete slab carrying US 20 (hwy 16) over Trout Creek in Linn County, Oregon. It was built in 2003, so it is 22 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 1,091 vehicles a day, roughly 24% of them trucks, projected to reach 1,200 by 2042. The structure is 59 ft (18 m) long and 36 ft wide. If it were closed, the detour would be 57.8 mi (93 km).

CarriesUS 20 (hwy 16)
CrossesTrout Creek
Location217 MI E HWY 212 JCT
RouteU.S. Route 20
StateOregon
Coordinates44.3985, -122.3475
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating75.4 US tons
Inventory rating58.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length59 ft (18 m)
Longest span59 ft (18 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,091 (2022)
Projected traffic1,200 by 2042
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed57.8 mi (93 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 20 (hwy 16) over Trout Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is US 20 (hwy 16) over Trout 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 February 2024.

How much traffic does US 20 (hwy 16) over Trout Creek carry?

About 1,091 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is US 20 (hwy 16) over Trout Creek?

The structure is 59 ft (18 m) long with a longest span of 59 ft (18 m) and a deck 36 ft wide.

Who owns US 20 (hwy 16) over Trout Creek?

It is owned by the State Highway Agency.