US Bridges

I-40 Frontage Rd. over Clinton Lake

Fair

Washita County, Oklahoma · 8.1 MI E Beckham C/L · Structure no. 019230000000000

Built
1927
98 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
129 ft
3 main spans
Daily traffic
99
2022 count
Owner
State
State Highway Agency

About this bridge

I-40 Frontage Rd. over Clinton Lake is a steel stringer/multi-beam or girder carrying I-40 Frontage Rd. over Clinton Lake in Washita County, Oklahoma. It was built in 1927, so it is 98 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 5 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 99 vehicles a day, roughly 36% of them trucks, projected to reach 125 by 2042. The structure is 129 ft (39.3 m) long and 23 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

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CarriesI-40 Frontage Rd.
CrossesClinton Lake
Location8.1 MI E Beckham C/L
RouteU.S. Route 40
CountyWashita County
StateOklahoma
Coordinates35.42121, -99.22363
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.9 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length129 ft (39.3 m)
Longest span40 ft (12.2 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2022)
Projected traffic125 by 2042
Trucks36%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-40 Frontage Rd. over Clinton Lake built?

It was built in 1927, making it 98 years old in 2025.

What condition is I-40 Frontage Rd. over Clinton Lake 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 2023.

How much traffic does I-40 Frontage Rd. over Clinton Lake carry?

About 99 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-40 Frontage Rd. over Clinton Lake?

The structure is 129 ft (39.3 m) long with a longest span of 40 ft (12.2 m) and a deck 23 ft wide.

Who owns I-40 Frontage Rd. over Clinton Lake?

It is owned by the State Highway Agency.