US Bridges

E1120 over Sweetwater Creek

Good

Beckham County, Oklahoma · 12.5 N 3.8 W of Erick · Structure no. 272080000000000

Built
2004
21 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
107 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

E1120 over Sweetwater Creek is a prestressed concrete stringer/multi-beam or girder carrying E1120 over Sweetwater Creek in Beckham County, Oklahoma. It was built in 2004, so it is 21 years old, younger 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 107 ft (32.6 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesE1120
CrossesSweetwater Creek
Location12.5 N 3.8 W of Erick
RouteCounty Highway E1120
Coordinates35.39325, -99.93444
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating46 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span33 ft (10.1 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$913,000
NavigationNo navigation control on waterway

Frequently asked questions

When was E1120 over Sweetwater Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is E1120 over Sweetwater Creek 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 April 2024.

How much traffic does E1120 over Sweetwater Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is E1120 over Sweetwater Creek?

The structure is 107 ft (32.6 m) long with a longest span of 33 ft (10.1 m) and a deck 29 ft wide.

Who owns E1120 over Sweetwater Creek?

It is owned by the County Highway Agency.