US Bridges

Multorpor Mt RD over HWY 26

Fair

Clackamas County, Oregon · 2.9 MI W HWY 53 JCT · Structure no. 20338 026 05351

Built
2006
19 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
111 ft
1 main span
Daily traffic
7,319
2020 count
Owner
State
State Highway Agency

About this bridge

Multorpor Mt RD over HWY 26 is a steel stringer/multi-beam or girder carrying Multorpor Mt RD over HWY 26 in Clackamas County, Oregon. It was built in 2006, so it is 19 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 7,319 vehicles a day, roughly 17% of them trucks, projected to reach 10,400 by 2040. The structure is 111 ft (33.8 m) long and 56 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMultorpor Mt RD
CrossesHWY 26
Location2.9 MI W HWY 53 JCT
StateOregon
Coordinates45.30235, -121.75588
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating58.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length111 ft (33.8 m)
Longest span106 ft (32.3 m)
Deck width56 ft (17.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,319 (2020)
Projected traffic10,400 by 2040
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Multorpor Mt RD over HWY 26 built?

It was built in 2006, making it 19 years old in 2025.

What condition is Multorpor Mt RD over HWY 26 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 May 2023.

How much traffic does Multorpor Mt RD over HWY 26 carry?

About 7,319 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is Multorpor Mt RD over HWY 26?

The structure is 111 ft (33.8 m) long with a longest span of 106 ft (32.3 m) and a deck 56 ft wide.

Who owns Multorpor Mt RD over HWY 26?

It is owned by the State Highway Agency.