US Bridges

SH 109 Ml over Muddy Creek

Good

Las Animas County, Colorado · 31 MI South of LA Junta · Structure no. N-23-L

Built
1974
51 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
350
2020 count
Owner
State
State Highway Agency

About this bridge

SH 109 Ml over Muddy Creek is a concrete culvert carrying SH 109 Ml over Muddy Creek in Las Animas 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 350 vehicles a day, roughly 17% of them trucks, projected to reach 483 by 2040. The structure is 41 ft (12.6 m) long and 42 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSH 109 Ml
CrossesMuddy Creek
Location31 MI South of LA Junta
RouteState Highway 109A
Coordinates37.6024, -103.33083
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.7 US tons
Inventory rating40.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length41 ft (12.6 m)
Longest span16 ft (4.8 m)
Deck width42 ft (12.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2020)
Projected traffic483 by 2040
Trucks17%
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 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 SH 109 Ml over Muddy Creek built?

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

What condition is SH 109 Ml over Muddy Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does SH 109 Ml over Muddy Creek carry?

About 350 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is SH 109 Ml over Muddy Creek?

The structure is 41 ft (12.6 m) long with a longest span of 16 ft (4.8 m) and a deck 42 ft wide.

Who owns SH 109 Ml over Muddy Creek?

It is owned by the State Highway Agency.