US Bridges

HWY 064 over Main ST

Fair

Clackamas County, Oregon · 0.4 MI N of W. Linn Br · Structure no. 09702 064 00951

Built
1972
53 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
214 ft
3 main spans
Daily traffic
108,786
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 064 over Main ST is a concrete continuous box beam or girders - multiple carrying HWY 064 over Main ST in Clackamas County, Oregon. It was built in 1972, so it is 53 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 108,786 vehicles a day, roughly 8% of them trucks, projected to reach 140,500 by 2042. The structure is 214 ft (65.2 m) long and 131 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesHWY 064
CrossesMain ST
Location0.4 MI N of W. Linn Br
RouteInterstate 205
StateOregon
Coordinates45.36681, -122.59664
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating20 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length214 ft (65.2 m)
Longest span103 ft (31.4 m)
Deck width131 ft (39.8 m)
Roadway width125 ft (38 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108,786 (2022)
Projected traffic140,500 by 2042
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 064 over Main ST built?

It was built in 1972, making it 53 years old in 2025.

What condition is HWY 064 over Main ST 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 March 2023.

How much traffic does HWY 064 over Main ST carry?

About 108,786 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is HWY 064 over Main ST?

The structure is 214 ft (65.2 m) long with a longest span of 103 ft (31.4 m) and a deck 131 ft wide.

Who owns HWY 064 over Main ST?

It is owned by the State Highway Agency.