US Bridges

US101 (hwy 9) over Tenmile Creek

Fair

Lane County, Oregon · 03.8 MI S Linc-Lane CO LN · Structure no. 01181 009 17144

Built
1931
94 years old, rebuilt 2007
Condition
Fair
inspected July 2023
Type
Arch - Thru
Concrete
Length
184 ft
1 main span
Daily traffic
2,922
2022 count
Owner
State
State Highway Agency

About this bridge

US101 (hwy 9) over Tenmile Creek is a concrete arch - thru carrying US101 (hwy 9) over Tenmile Creek in Lane County, Oregon. It was built in 1931 and reconstructed in 2007, so it is 94 years old, older 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 2,922 vehicles a day, roughly 8% of them trucks, projected to reach 3,700 by 2042. The structure is 184 ft (56.2 m) long and 44 ft wide. If it were closed, the detour would be 81.4 mi (131 km).

Location

Open in Google Maps
CarriesUS101 (hwy 9)
CrossesTenmile Creek
Location03.8 MI S Linc-Lane CO LN
RouteU.S. Route 101
CountyLane County
StateOregon
Coordinates44.22413, -124.10955
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeArch - Thru
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length184 ft (56.2 m)
Longest span120 ft (36.6 m)
Deck width44 ft (13.3 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic2,922 (2022)
Projected traffic3,700 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed81.4 mi (131 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US101 (hwy 9) over Tenmile Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2007.

What condition is US101 (hwy 9) over Tenmile 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 July 2023.

How much traffic does US101 (hwy 9) over Tenmile Creek carry?

About 2,922 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is US101 (hwy 9) over Tenmile Creek?

The structure is 184 ft (56.2 m) long with a longest span of 120 ft (36.6 m) and a deck 44 ft wide.

Who owns US101 (hwy 9) over Tenmile Creek?

It is owned by the State Highway Agency.