US Bridges

FAU 8120(121st S. over Haikey Creek

PoorPosted for load

Tulsa County, Oklahoma · S.121st 100W. of Garnett · Structure no. 140900000000000

Built
1958
67 years old
Condition
Poor
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
6,494
2024 count
Owner
County
County Highway Agency

About this bridge

FAU 8120(121st S. over Haikey Creek is a steel stringer/multi-beam or girder carrying FAU 8120(121st S. over Haikey Creek in Tulsa County, Oklahoma. It was built in 1958, so it is 67 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 6,494 vehicles a day, roughly 5% of them trucks, projected to reach 10,391 by 2044. The structure is 72 ft (22 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFAU 8120(121st S.
CrossesHaikey Creek
LocationS.121st 100W. of Garnett
RouteCounty Highway 8120
CountyTulsa County
StateOklahoma
Coordinates35.98831, -95.85176
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (22 m)
Longest span64 ft (19.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,494 (2024)
Projected traffic10,391 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$426,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 8120(121st S. over Haikey Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is FAU 8120(121st S. over Haikey Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does FAU 8120(121st S. over Haikey Creek carry?

About 6,494 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is FAU 8120(121st S. over Haikey Creek?

The structure is 72 ft (22 m) long with a longest span of 64 ft (19.6 m) and a deck 31 ft wide.

Who owns FAU 8120(121st S. over Haikey Creek?

It is owned by the County Highway Agency.