US Bridges

Marcola RD over Mckenzie River

Fair

Lane County, Oregon · 040 MI NE Springfield · Structure no. 001229190000318

Built
1968
57 years old, rebuilt 1991
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
268 ft
3 main spans
Daily traffic
9,735
2020 count
Owner
County
County Highway Agency

About this bridge

Marcola RD over Mckenzie River is a steel stringer/multi-beam or girder carrying Marcola RD over Mckenzie River in Lane County, Oregon. It was built in 1968 and reconstructed in 1991, so it is 57 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 9,735 vehicles a day, roughly 10% of them trucks, projected to reach 11,120 by 2025. The structure is 268 ft (81.7 m) long and 66 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesMarcola RD
CrossesMckenzie River
Location040 MI NE Springfield
RouteCounty Highway AO464
StateOregon
Coordinates44.07167, -122.96408
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length268 ft (81.7 m)
Longest span181 ft (55.2 m)
Deck width66 ft (20 m)
Roadway width56 ft (17.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,735 (2020)
Projected traffic11,120 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Marcola RD over Mckenzie River built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1991.

What condition is Marcola RD 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 August 2024.

How much traffic does Marcola RD over Mckenzie River carry?

About 9,735 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Marcola RD over Mckenzie River?

The structure is 268 ft (81.7 m) long with a longest span of 181 ft (55.2 m) and a deck 66 ft wide.

Who owns Marcola RD over Mckenzie River?

It is owned by the County Highway Agency.