US Bridges

E1120 (20 St.) over Elk Creek

FairPosted for load

Beckham County, Oklahoma · 20 St. & Sandy Ln. · Structure no. 204940000000000

Built
1983
42 years old
Condition
Fair
inspected March 2024
Type
Other
Steel Continuous
Length
75 ft
2 main spans
Daily traffic
500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

E1120 (20 St.) over Elk Creek is a steel continuous other carrying E1120 (20 St.) over Elk Creek in Beckham County, Oklahoma. It was built in 1983, so it is 42 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, roughly 5% of them trucks, projected to reach 800 by 2042. The structure is 75 ft (22.9 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesE1120 (20 St.)
CrossesElk Creek
Location20 St. & Sandy Ln.
RouteCity Street E1120
CountyBeckham County
StateOklahoma
Coordinates35.39286, -99.39554
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31 US tons
Inventory rating19 US tons

Structure

Structure typeOther
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length75 ft (22.9 m)
Longest span37 ft (11.3 m)
Deck width32 ft (9.7 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic800 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$436,000
NavigationNo navigation control on waterway

Frequently asked questions

When was E1120 (20 St.) over Elk Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is E1120 (20 St.) over Elk Creek 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 2024.

How much traffic does E1120 (20 St.) over Elk Creek carry?

About 500 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is E1120 (20 St.) over Elk Creek?

The structure is 75 ft (22.9 m) long with a longest span of 37 ft (11.3 m) and a deck 32 ft wide.

Who owns E1120 (20 St.) over Elk Creek?

It is owned by the City or Municipal Highway Agency.