US Bridges

Royal Ave over Amazon Canal

Poor

Lane County, Oregon · 030 MI W Eugene · Structure no. 39C008145500315

Built
1973
52 years old
Condition
Poor
inspected July 2024
Type
Slab
Prestressed Concrete
Length
120 ft
5 main spans
Daily traffic
6,753
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Royal Ave over Amazon Canal is a prestressed concrete slab carrying Royal Ave over Amazon Canal in Lane County, Oregon. It was built in 1973, so it is 52 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,753 vehicles a day, roughly 10% of them trucks, projected to reach 10,714 by 2025. The structure is 120 ft (36.6 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesRoyal Ave
CrossesAmazon Canal
Location030 MI W Eugene
RouteCity Street U1320
CountyLane County
StateOregon
Coordinates44.07023, -123.2045
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be 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 rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans5
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span25 ft (7.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,753 (2020)
Projected traffic10,714 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$615,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Royal Ave over Amazon Canal built?

It was built in 1973, making it 52 years old in 2025.

What condition is Royal Ave over Amazon Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Royal Ave over Amazon Canal carry?

About 6,753 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Royal Ave over Amazon Canal?

The structure is 120 ft (36.6 m) long with a longest span of 25 ft (7.6 m) and a deck 32 ft wide.

Who owns Royal Ave over Amazon Canal?

It is owned by the City or Municipal Highway Agency.