US Bridges

US 40 Ml over Colorado River

Fair

Grand County, Colorado · 14.8 MI E / SH 9 Kremling · Structure no. D-12-Q

Built
1974
51 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
304 ft
3 main spans
Daily traffic
2,600
2020 count
Owner
State
State Highway Agency

About this bridge

US 40 Ml over Colorado River is a steel continuous box beam or girders - single or spread carrying US 40 Ml over Colorado River in Grand County, Colorado. It was built in 1974, so it is 51 years old, older than the Colorado average of 42.2 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.

It carries about 2,600 vehicles a day, roughly 8% of them trucks, projected to reach 3,068 by 2040. The structure is 304 ft (92.7 m) long and 47 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesUS 40 Ml
CrossesColorado River
Location14.8 MI E / SH 9 Kremling
RouteU.S. Route 40A
Coordinates40.05215, -106.13297
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length304 ft (92.7 m)
Longest span120 ft (36.6 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2020)
Projected traffic3,068 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 km)
TollOn a free road
National Highway SystemYes

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 Colorado River built?

It was built in 1974, making it 51 years old in 2025.

What condition is US 40 Ml over Colorado River 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 October 2024.

How much traffic does US 40 Ml over Colorado River carry?

About 2,600 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is US 40 Ml over Colorado River?

The structure is 304 ft (92.7 m) long with a longest span of 120 ft (36.6 m) and a deck 47 ft wide.

Who owns US 40 Ml over Colorado River?

It is owned by the State Highway Agency.