US Bridges

Clear Lake RD over Amazon Creek

Fair

Lane County, Oregon · 015 MI SW Mahlon Sweet Ap · Structure no. 13461A370000268

Built
1974
51 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
160 ft
4 main spans
Daily traffic
8,958
2020 count
Owner
County
County Highway Agency

About this bridge

Clear Lake RD over Amazon Creek is a prestressed concrete slab carrying Clear Lake RD over Amazon Creek in Lane County, Oregon. It was built in 1974, so it is 51 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 8,958 vehicles a day, roughly 10% of them trucks, projected to reach 9,603 by 2025. The structure is 160 ft (48.8 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesClear Lake RD
CrossesAmazon Creek
Location015 MI SW Mahlon Sweet Ap
RouteCounty Highway A0454
CountyLane County
StateOregon
Coordinates44.10564, -123.22569
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
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 rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans4
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,958 (2020)
Projected traffic9,603 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Clear Lake RD over Amazon Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Clear Lake RD over Amazon 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 2024.

How much traffic does Clear Lake RD over Amazon Creek carry?

About 8,958 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Clear Lake RD over Amazon Creek?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 44 ft wide.

Who owns Clear Lake RD over Amazon Creek?

It is owned by the County Highway Agency.