US Bridges

Portland Ave. over N. Canadian River

Fair

Oklahoma County, Oklahoma · N of SW 15/PORTLAND · Structure no. 229440000000000

Built
1991
34 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
540 ft
6 main spans
Daily traffic
11,500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Portland Ave. over N. Canadian River is a prestressed concrete stringer/multi-beam or girder carrying Portland Ave. over N. Canadian River in Oklahoma County, Oklahoma. It was built in 1991, so it is 34 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 11,500 vehicles a day, roughly 7% of them trucks, projected to reach 18,400 by 2042. The structure is 540 ft (164.6 m) long and 73 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesPortland Ave.
CrossesN. Canadian River
LocationN of SW 15/PORTLAND
RouteCity Street 9281
CountyOklahoma County
StateOklahoma
Coordinates35.45045, -97.58338
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.2 US tons
Inventory rating27.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length540 ft (164.6 m)
Longest span99 ft (30.2 m)
Deck width73 ft (22.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2022)
Projected traffic18,400 by 2042
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Portland Ave. over N. Canadian River built?

It was built in 1991, making it 34 years old in 2025.

What condition is Portland Ave. over N. Canadian 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 October 2024.

How much traffic does Portland Ave. over N. Canadian River carry?

About 11,500 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Portland Ave. over N. Canadian River?

The structure is 540 ft (164.6 m) long with a longest span of 99 ft (30.2 m) and a deck 73 ft wide.

Who owns Portland Ave. over N. Canadian River?

It is owned by the City or Municipal Highway Agency.