US Bridges

SH 71 Ml over Timpas Creek

Fair

Otero County, Colorado · 7 MI No of JCT US 350 · Structure no. M-22-AD

Built
1948
77 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
184 ft
3 main spans
Daily traffic
220
2020 count
Owner
State
State Highway Agency

About this bridge

SH 71 Ml over Timpas Creek is a steel continuous stringer/multi-beam or girder carrying SH 71 Ml over Timpas Creek in Otero County, Colorado. It was built in 1948, so it is 77 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 220 vehicles a day, roughly 17% of them trucks, projected to reach 326 by 2040. The structure is 184 ft (56.1 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSH 71 Ml
CrossesTimpas Creek
Location7 MI No of JCT US 350
RouteState Highway 71A
Coordinates37.95327, -103.72972
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.7 US tons
Inventory rating26.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length184 ft (56.1 m)
Longest span72 ft (21.9 m)
Deck width29 ft (8.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2020)
Projected traffic326 by 2040
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 71 Ml over Timpas Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is SH 71 Ml over Timpas 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 January 2024.

How much traffic does SH 71 Ml over Timpas Creek carry?

About 220 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is SH 71 Ml over Timpas Creek?

The structure is 184 ft (56.1 m) long with a longest span of 72 ft (21.9 m) and a deck 29 ft wide.

Who owns SH 71 Ml over Timpas Creek?

It is owned by the State Highway Agency.