US Bridges

Marcola RD over Mohawk River

Fair

Lane County, Oregon · 070 MI NE Springfield · Structure no. 19613 190000724

Built
2003
22 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
385 ft
3 main spans
Daily traffic
7,790
2020 count
Owner
County
County Highway Agency

About this bridge

Marcola RD over Mohawk River is a prestressed concrete stringer/multi-beam or girder carrying Marcola RD over Mohawk River in Lane County, Oregon. It was built in 2003, so it is 22 years old, younger 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 7,790 vehicles a day, roughly 15% of them trucks, projected to reach 8,540 by 2025. The structure is 385 ft (117.3 m) long and 42 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesMarcola RD
CrossesMohawk River
Location070 MI NE Springfield
RouteCounty Highway A0464
StateOregon
Coordinates44.11768, -122.92021
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.
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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating45.7 US tons
Inventory rating35.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length385 ft (117.3 m)
Longest span125 ft (38 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,790 (2020)
Projected traffic8,540 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Marcola RD over Mohawk River built?

It was built in 2003, making it 22 years old in 2025.

What condition is Marcola RD over Mohawk 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 Mohawk River carry?

About 7,790 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Marcola RD over Mohawk River?

The structure is 385 ft (117.3 m) long with a longest span of 125 ft (38 m) and a deck 42 ft wide.

Who owns Marcola RD over Mohawk River?

It is owned by the County Highway Agency.