US Bridges

SH 184 Ml over Narraguinnep Canal

Good

Montezuma County, Colorado · 1.28 MI E of JCT US 491 · Structure no. O-02-C

Built
2016
9 years old
Condition
Good
inspected February 2025
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
1,100
2020 count
Owner
State
State Highway Agency

About this bridge

SH 184 Ml over Narraguinnep Canal is a concrete culvert carrying SH 184 Ml over Narraguinnep Canal in Montezuma County, Colorado. It was built in 2016, so it is 9 years old, younger 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 1,100 vehicles a day, roughly 11% of them trucks, projected to reach 1,210 by 2040. The structure is 20 ft (6.1 m) long and 64 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSH 184 Ml
CrossesNarraguinnep Canal
Location1.28 MI E of JCT US 491
RouteState Highway 184A
Coordinates37.48217, -108.63919
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 inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width64 ft (19.5 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2020)
Projected traffic1,210 by 2040
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 184 Ml over Narraguinnep Canal built?

It was built in 2016, making it 9 years old in 2025.

What condition is SH 184 Ml over Narraguinnep Canal 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 February 2025.

How much traffic does SH 184 Ml over Narraguinnep Canal carry?

About 1,100 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is SH 184 Ml over Narraguinnep Canal?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 64 ft wide.

Who owns SH 184 Ml over Narraguinnep Canal?

It is owned by the State Highway Agency.