SH 59 Ml over E Spring Creek Trib.
Kit Carson County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 59 Ml over E Spring Creek Trib. in Kit Carson County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1969 and reconstructed in 1994, making it 56 years old at the 2025 inventory.
- It carries about 380 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 88 of the 130 inventoried bridges in Kit Carson County rated fair (67.7%); 2 (1.5%) 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.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (39.12228, -102.86594)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel girder and floorbeam |
| Length | about 40 ft |
| Location | 12.9 Mi S of Jct I 70 |
| NBI structure number | H-25-M |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2025 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Kit Carson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 70 Ml over Draw | 1967 | 9,900 | Fair |
| I 70 Ml over Draw | 1969 | 9,900 | Fair |
| I 70 Ml over Draw | 1966 | 9,200 | Fair |
| I 70 Ml over Draw | 1964 | 9,000 | Fair |
| I 70 Ml over Drain Ditch | 1968 | 8,000 | Fair |
| I 70 Ml Ebnd over Republican River | 1975 | 5,000 | Fair |
All bridges nearby: Kit Carson County, CO bridge conditions · every bridge in Kit Carson County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.