US Bridges

US 350 Ml over Taylor Arroyo

Fair

Otero County, Colorado · 3.3 Miles NE of Delhi · Structure no. N-21-E

Built
1935
90 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
2 main spans
Daily traffic
470
2020 count
Owner
State
State Highway Agency

About this bridge

US 350 Ml over Taylor Arroyo is a steel stringer/multi-beam or girder carrying US 350 Ml over Taylor Arroyo in Otero 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 5 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 84 ft (25.6 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 350 Ml
CrossesTaylor Arroyo
Location3.3 Miles NE of Delhi
RouteU.S. Route 350A
Coordinates37.67618, -103.98198
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.9 US tons
Inventory rating15.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length84 ft (25.6 m)
Longest span39 ft (12 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 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 Taylor Arroyo built?

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

What condition is US 350 Ml over Taylor Arroyo 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 August 2024.

How much traffic does US 350 Ml over Taylor Arroyo carry?

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

How long is US 350 Ml over Taylor Arroyo?

The structure is 84 ft (25.6 m) long with a longest span of 39 ft (12 m) and a deck 33 ft wide.

Who owns US 350 Ml over Taylor Arroyo?

It is owned by the State Highway Agency.