US Bridges

King Road West over Mckenzie River

FairPosted for load

Lane County, Oregon · 060 MI East of Blue River · Structure no. 39C123111600001

Built
1966
59 years old, rebuilt 1992
Condition
Fair
inspected July 2024
Type
Truss - Thru
Wood or Timber
Length
181 ft
1 main span
Daily traffic
365
2020 count
Owner
County
County Highway Agency

About this bridge

King Road West over Mckenzie River is a wood or timber truss - thru carrying King Road West over Mckenzie River in Lane County, Oregon. It was built in 1966 and reconstructed in 1992, so it is 59 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 365 vehicles a day, roughly 10% of them trucks, projected to reach 430 by 2025. The structure is 181 ft (55.2 m) long and 23 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesKing Road West
CrossesMckenzie River
Location060 MI East of Blue River
RouteCounty Highway C1116
CountyLane County
StateOregon
Coordinates44.16799, -122.22835
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating10.4 US tons
Inventory rating7.8 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span135 ft (41.1 m)
Deck width23 ft (7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic365 (2020)
Projected traffic430 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was King Road West over Mckenzie River built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1992.

What condition is King Road West over Mckenzie River 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 King Road West over Mckenzie River carry?

About 365 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is King Road West over Mckenzie River?

The structure is 181 ft (55.2 m) long with a longest span of 135 ft (41.1 m) and a deck 23 ft wide.

Who owns King Road West over Mckenzie River?

It is owned by the County Highway Agency.