US Bridges

Conn 3 over HWY 61

Fair

Multnomah County, Oregon · 0.1 MI N of Jefferson ST · Structure no. 09251 061C00189

Built
1968
57 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
236 ft
2 main spans
Daily traffic
4,525
2022 count
Owner
State
State Highway Agency

About this bridge

Conn 3 over HWY 61 is a concrete continuous box beam or girders - multiple carrying Conn 3 over HWY 61 in Multnomah County, Oregon. It was built in 1968, 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 4,525 vehicles a day, roughly 6% of them trucks, projected to reach 112,100 by 2036. The structure is 236 ft (71.8 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesConn 3
CrossesHWY 61
Location0.1 MI N of Jefferson ST
RouteState Highway 405
StateOregon
Coordinates45.51834, -122.68711
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.1 US tons
Inventory rating16.4 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length236 ft (71.8 m)
Longest span135 ft (41.1 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,525 (2022)
Projected traffic112,100 by 2036
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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$1.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Conn 3 over HWY 61 built?

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

What condition is Conn 3 over HWY 61 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 2023.

How much traffic does Conn 3 over HWY 61 carry?

About 4,525 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Conn 3 over HWY 61?

The structure is 236 ft (71.8 m) long with a longest span of 135 ft (41.1 m) and a deck 36 ft wide.

Who owns Conn 3 over HWY 61?

It is owned by the State Highway Agency.