SH 184 Ml over Narraguinnep Canal
Montezuma County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 184 Ml over Narraguinnep Canal in Montezuma County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2016, making it 9 years old at the 2025 inventory.
- It carries about 1,100 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 14 of the 60 inventoried bridges in Montezuma County rated good (23.3%); 5 (8.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated February 2025, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.48217, -108.63919)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | 1.28 Mi E of Jct US 491 |
| NBI structure number | O-02-C |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2025 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Montezuma County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr# US 160 Ml over Mc Elmo Creek | 1958 | 9,400 | Fair |
| US 160 Ml over Mc Elmo Creek | 1969 | 6,700 | Fair |
| US 160 Ml over Mancos River | 1958 | 6,000 | Fair |
| SH 145 Ml over Dolores River | 1972 | 4,300 | Fair |
| Irr# US 491 Ml over Mancos River | 1959 | 4,000 | Fair |
| Irr# US 491 Ml over Indian Creek | 1959 | 4,000 | Fair |
All bridges nearby: Montezuma County, CO bridge conditions · every bridge in Montezuma County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.