US Bridges

Alvadore RD over Amazon Creek

Fair

Lane County, Oregon · 030 MI SW Junction City · Structure no. 39C46 361500051

Built
1969
56 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
103 ft
3 main spans
Daily traffic
819
2020 count
Owner
County
County Highway Agency

About this bridge

Alvadore RD over Amazon Creek is a prestressed concrete slab carrying Alvadore RD over Amazon Creek in Lane County, Oregon. It was built in 1969, so it is 56 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 819 vehicles a day, roughly 10% of them trucks, projected to reach 909 by 2025. The structure is 103 ft (31.4 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesAlvadore RD
CrossesAmazon Creek
Location030 MI SW Junction City
RouteCounty Highway AO455
CountyLane County
StateOregon
Coordinates44.18719, -123.24742
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating53 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span34 ft (10.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic819 (2020)
Projected traffic909 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Alvadore RD over Amazon Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Alvadore 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 Alvadore RD over Amazon Creek carry?

About 819 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Alvadore RD over Amazon Creek?

The structure is 103 ft (31.4 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.

Who owns Alvadore RD over Amazon Creek?

It is owned by the County Highway Agency.