US Bridges

FAU 4121 (oak St) over S.H. 1 under

Fair

Pontotoc County, Oklahoma · In Ada · Structure no. 172870000000000

Built
1968
57 years old
Condition
Fair
inspected June 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
169 ft
2 main spans
Daily traffic
500
2022 count
Owner
State
State Highway Agency

About this bridge

FAU 4121 (oak St) over S.H. 1 under is a steel continuous girder and floorbeam system carrying FAU 4121 (oak St) over S.H. 1 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 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 500 vehicles a day, roughly 7% of them trucks, projected to reach 800 by 2042. The structure is 169 ft (51.5 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAU 4121 (oak St)
CrossesS.H. 1 under
LocationIn Ada
RouteCity Street 4121
CountyPontotoc County
StateOklahoma
Coordinates34.78946, -96.68736
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 loadH 20
Structure length169 ft (51.5 m)
Longest span86 ft (26.2 m)
Deck width38 ft (11.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic800 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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$2.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 4121 (oak St) over S.H. 1 under built?

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

What condition is FAU 4121 (oak St) over S.H. 1 under 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 June 2024.

How much traffic does FAU 4121 (oak St) over S.H. 1 under carry?

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

How long is FAU 4121 (oak St) over S.H. 1 under?

The structure is 169 ft (51.5 m) long with a longest span of 86 ft (26.2 m) and a deck 38 ft wide.

Who owns FAU 4121 (oak St) over S.H. 1 under?

It is owned by the State Highway Agency.