SH 59 Ml over South Platte River
Sedgwick County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 59 Ml over South Platte River in Sedgwick County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1987, making it 38 years old at the 2025 inventory.
- It carries about 560 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 36 of the 65 inventoried bridges in Sedgwick County rated fair (55.4%); 1 (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 June 2023, on a 24-month routine inspection cycle.
- 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 → (40.92507, -102.51764)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 1,056 ft |
| Location | 1.6 Mi N of I-76 Sedgwick |
| NBI structure number | A-26-BA |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| 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 Sedgwick County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 76 Ml over Draw | 1969 | 9,200 | Fair |
| I 76 Ml over Draw | 1969 | 9,200 | Fair |
| I 76 Ml Wbnd over County Road 9 | 1968 | 4,000 | Fair |
| I 76 Ml Ebnd over County Road 9 | 1968 | 4,000 | Fair |
| I 76 Ml Wbnd over SH 59 Ml | 1968 | 4,000 | Fair |
| I 76 Ml Ebnd over SH 59 Ml | 1968 | 4,000 | Fair |
All bridges nearby: Sedgwick County, CO bridge conditions · every bridge in Sedgwick County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.