US Bridges

SH 141 Ml over Naturita Creek

Fair

Montrose County, Colorado · Just East of Naturita · Structure no. L-02-B

Built
1954
71 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
103 ft
3 main spans
Daily traffic
1,200
2020 count
Owner
State
State Highway Agency

About this bridge

SH 141 Ml over Naturita Creek is a steel continuous stringer/multi-beam or girder carrying SH 141 Ml over Naturita Creek in Montrose County, Colorado. It was built in 1954, so it is 71 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 1,200 vehicles a day, roughly 9% of them trucks, projected to reach 1,344 by 2040. The structure is 103 ft (31.5 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSH 141 Ml
CrossesNaturita Creek
LocationJust East of Naturita
RouteState Highway 141A
Coordinates38.2175, -108.54539
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 protection7 GoodSome minor problems.
Last inspectionDecember 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length103 ft (31.5 m)
Longest span38 ft (11.6 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2020)
Projected traffic1,344 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 SH 141 Ml over Naturita Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is SH 141 Ml over Naturita Creek 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 2023.

How much traffic does SH 141 Ml over Naturita Creek carry?

About 1,200 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SH 141 Ml over Naturita Creek?

The structure is 103 ft (31.5 m) long with a longest span of 38 ft (11.6 m) and a deck 32 ft wide.

Who owns SH 141 Ml over Naturita Creek?

It is owned by the State Highway Agency.