US Bridges

US 350 Ml over Draw

Fair

Las Animas County, Colorado · 8.3 MI NE of Tyrone · Structure no. N-20-H

Built
1935
90 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
470
2020 count
Owner
State
State Highway Agency

About this bridge

US 350 Ml over Draw is a steel stringer/multi-beam or girder carrying US 350 Ml over Draw in Las Animas County, Colorado. It was built in 1935, so it is 90 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 470 vehicles a day, roughly 18% of them trucks, projected to reach 611 by 2040. The structure is 53 ft (16.3 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 350 Ml
CrossesDraw
Location8.3 MI NE of Tyrone
RouteU.S. Route 350A
Coordinates37.54337, -104.10933
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating19.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length53 ft (16.3 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic470 (2020)
Projected traffic611 by 2040
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 350 Ml over Draw built?

It was built in 1935, making it 90 years old in 2025.

What condition is US 350 Ml over Draw 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 December 2024.

How much traffic does US 350 Ml over Draw carry?

About 470 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is US 350 Ml over Draw?

The structure is 53 ft (16.3 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns US 350 Ml over Draw?

It is owned by the State Highway Agency.