US Bridges

S.H. 99 over S.H. 3 under

Good

Pontotoc County, Oklahoma · 2.4 MI S-E SH 3W JCT · Structure no. 186000000000000

Built
1973
52 years old, rebuilt 2023
Condition
Good
inspected June 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
366 ft
2 main spans
Daily traffic
2,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 99 over S.H. 3 under is a steel continuous girder and floorbeam system carrying S.H. 99 over S.H. 3 under in Pontotoc County, Oklahoma. It was built in 1973 and reconstructed in 2023, so it is 52 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,400 vehicles a day, roughly 16% of them trucks, projected to reach 3,840 by 2042. The structure is 366 ft (111.6 m) long and 50 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesS.H. 99
CrossesS.H. 3 under
Location2.4 MI S-E SH 3W JCT
RouteState Highway 99
CountyPontotoc County
StateOklahoma
Coordinates34.72566, -96.63478
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating34.9 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length366 ft (111.6 m)
Longest span130 ft (39.6 m)
Deck width50 ft (15.1 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2022)
Projected traffic3,840 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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$2.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 99 over S.H. 3 under built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2023.

What condition is S.H. 99 over S.H. 3 under in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does S.H. 99 over S.H. 3 under carry?

About 2,400 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is S.H. 99 over S.H. 3 under?

The structure is 366 ft (111.6 m) long with a longest span of 130 ft (39.6 m) and a deck 50 ft wide.

Who owns S.H. 99 over S.H. 3 under?

It is owned by the State Highway Agency.