US Bridges

US 138 Ml over Cottonwood Creek

Good

Sedgwick County, Colorado · 10.7 MI N of SH 55 · Structure no. A-26-AY

Built
1978
47 years old
Condition
Good
inspected February 2025
Type
Slab
Concrete Continuous
Length
43 ft
2 main spans
Daily traffic
370
2020 count
Owner
State
State Highway Agency

About this bridge

US 138 Ml over Cottonwood Creek is a concrete continuous slab carrying US 138 Ml over Cottonwood Creek in Sedgwick County, Colorado. It was built in 1978, so it is 47 years old, older than the Colorado average of 42.2 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 370 vehicles a day, roughly 21% of them trucks, projected to reach 422 by 2040. The structure is 43 ft (13.1 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 138 Ml
CrossesCottonwood Creek
Location10.7 MI N of SH 55
RouteU.S. Route 138A
Coordinates40.91004, -102.61344
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.6 US tons
Inventory rating53.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length43 ft (13.1 m)
Longest span20 ft (6 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic370 (2020)
Projected traffic422 by 2040
Trucks21%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 138 Ml over Cottonwood Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is US 138 Ml over Cottonwood 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 February 2025.

How much traffic does US 138 Ml over Cottonwood Creek carry?

About 370 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is US 138 Ml over Cottonwood Creek?

The structure is 43 ft (13.1 m) long with a longest span of 20 ft (6 m) and a deck 40 ft wide.

Who owns US 138 Ml over Cottonwood Creek?

It is owned by the State Highway Agency.