US Bridges

US 40 Ml over Agate Creek

Good

Elbert County, Colorado · .4 MI W. of Agate · Structure no. G-21-AQ

Built
2022
3 years old
Condition
Good
inspected March 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
120
2018 count
Owner
State
State Highway Agency

About this bridge

US 40 Ml over Agate Creek is a prestressed concrete box beam or girders - single or spread carrying US 40 Ml over Agate Creek in Elbert County, Colorado. It was built in 2022, so it is 3 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 120 vehicles a day, roughly 8% of them trucks, projected to reach 226 by 2038. The structure is 88 ft (26.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 40 Ml
CrossesAgate Creek
Location.4 MI W. of Agate
RouteU.S. Route 40F
Coordinates39.47713, -103.95343
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length88 ft (26.8 m)
Longest span82 ft (25 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2018)
Projected traffic226 by 2038
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 40 Ml over Agate Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is US 40 Ml over Agate 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 March 2025.

How much traffic does US 40 Ml over Agate Creek carry?

About 120 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is US 40 Ml over Agate Creek?

The structure is 88 ft (26.8 m) long with a longest span of 82 ft (25 m) and a deck 43 ft wide.

Who owns US 40 Ml over Agate Creek?

It is owned by the State Highway Agency.