US Bridges

I-35 SB Ramp S.H.9 over S. Canadian Oflow

Fair

McClain County, Oklahoma · S. of Norman · Structure no. 274770000000000

Built
2006
19 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
6,650
2022 count
Owner
State
State Highway Agency

About this bridge

I-35 SB Ramp S.H.9 over S. Canadian Oflow is a prestressed concrete stringer/multi-beam or girder carrying I-35 SB Ramp S.H.9 over S. Canadian Oflow in McClain County, Oklahoma. It was built in 2006, so it is 19 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 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 6,650 vehicles a day, roughly 12% of them trucks, projected to reach 10,640 by 2042. The structure is 120 ft (36.6 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesI-35 SB Ramp S.H.9
CrossesS. Canadian Oflow
LocationS. of Norman
RouteState Highway 35
CountyMcClain County
StateOklahoma
Coordinates35.18404, -97.4932
Functional classUrban Other Principal 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.3 US tons
Inventory rating41.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,650 (2022)
Projected traffic10,640 by 2042
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-35 SB Ramp S.H.9 over S. Canadian Oflow built?

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

What condition is I-35 SB Ramp S.H.9 over S. Canadian Oflow 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 August 2023.

How much traffic does I-35 SB Ramp S.H.9 over S. Canadian Oflow carry?

About 6,650 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-35 SB Ramp S.H.9 over S. Canadian Oflow?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns I-35 SB Ramp S.H.9 over S. Canadian Oflow?

It is owned by the State Highway Agency.