US Bridges

S.H. 9 over Magnolia Creek

Fair

Seminole County, Oklahoma · 0.2 MI W of SH 99 · Structure no. 164310000000000

Built
1965
60 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
54 ft
3 main spans
Daily traffic
9,800
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 9 over Magnolia Creek is a concrete culvert carrying S.H. 9 over Magnolia Creek in Seminole County, Oklahoma. It was built in 1965, so it is 60 years old, older 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 9,800 vehicles a day, roughly 5% of them trucks, projected to reach 15,680 by 2042. The structure is 54 ft (16.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS.H. 9
CrossesMagnolia Creek
Location0.2 MI W of SH 99
RouteState Highway 9
CountySeminole County
StateOklahoma
Coordinates35.24649, -96.67579
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,800 (2022)
Projected traffic15,680 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$948,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 9 over Magnolia Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is S.H. 9 over Magnolia Creek 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 March 2024.

How much traffic does S.H. 9 over Magnolia Creek carry?

About 9,800 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is S.H. 9 over Magnolia Creek?

The structure is 54 ft (16.5 m) long with a longest span of 17 ft (5.2 m).

Who owns S.H. 9 over Magnolia Creek?

It is owned by the State Highway Agency.