US Bridges

HWY 81 Conn HWY 01 over Bike Path

Fair

Multnomah County, Oregon · 1.0 MI S of Interstate Br · Structure no. 17108 001C30734

Built
1992
33 years old
Condition
Fair
inspected January 2025
Type
Slab
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
7,102
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 81 Conn HWY 01 over Bike Path is a prestressed concrete slab carrying HWY 81 Conn HWY 01 over Bike Path in Multnomah County, Oregon. It was built in 1992, so it is 33 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 7,102 vehicles a day, roughly 8% of them trucks, projected to reach 14,550 by 2042. The structure is 71 ft (21.6 m) long and 44 ft wide.

CarriesHWY 81 Conn HWY 01
CrossesBike Path
Location1.0 MI S of Interstate Br
RouteState Highway 99
StateOregon
Coordinates45.60403, -122.68133
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.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length71 ft (21.6 m)
Longest span70 ft (21.3 m)
Deck width44 ft (13.4 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,102 (2022)
Projected traffic14,550 by 2042
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 81 Conn HWY 01 over Bike Path built?

It was built in 1992, making it 33 years old in 2025.

What condition is HWY 81 Conn HWY 01 over Bike Path 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 January 2025.

How much traffic does HWY 81 Conn HWY 01 over Bike Path carry?

About 7,102 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is HWY 81 Conn HWY 01 over Bike Path?

The structure is 71 ft (21.6 m) long with a longest span of 70 ft (21.3 m) and a deck 44 ft wide.

Who owns HWY 81 Conn HWY 01 over Bike Path?

It is owned by the State Highway Agency.