US Bridges

S.H. 1 over S.H. 3 under

Good

Pontotoc County, Oklahoma · 1 MI SW Ada · Structure no. 173140000000000

Built
1968
57 years old
Condition
Good
inspected June 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
185 ft
2 main spans
Daily traffic
3,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 1 over S.H. 3 under is a steel continuous girder and floorbeam system carrying S.H. 1 over S.H. 3 under in Pontotoc County, Oklahoma. It was built in 1968, so it is 57 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,400 vehicles a day, roughly 7% of them trucks, projected to reach 5,440 by 2042. The structure is 185 ft (56.4 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesS.H. 1
CrossesS.H. 3 under
Location1 MI SW Ada
RouteState Highway 1
CountyPontotoc County
StateOklahoma
Coordinates34.76342, -96.70186
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating58 US tons
Inventory rating34.8 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length185 ft (56.4 m)
Longest span104 ft (31.7 m)
Deck width41 ft (12.5 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic5,440 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$2.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 1 over S.H. 3 under built?

It was built in 1968, making it 57 years old in 2025.

What condition is S.H. 1 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. 1 over S.H. 3 under carry?

About 3,400 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is S.H. 1 over S.H. 3 under?

The structure is 185 ft (56.4 m) long with a longest span of 104 ft (31.7 m) and a deck 41 ft wide.

Who owns S.H. 1 over S.H. 3 under?

It is owned by the State Highway Agency.