I029 N over 254 St (fas 6148)
Minnehaha County, South Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I029 N over 254 St (fas 6148) in Minnehaha County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1963, making it 62 years old at the 2025 inventory.
- It carries about 10,855 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 195 of the 394 inventoried bridges in Minnehaha County rated fair (49.5%); 36 (9.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 6 to 7.
- Its most recent inspection on record is dated August 2024, 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 → (43.70338, -96.78116)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 119 ft |
| Location | 6.3 N I 90 Interch |
| NBI structure number | 000000050176100 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Minnehaha County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I229 over Ck | 1959 | 43,830 | Fair |
| West 12TH Street over Big Sioux River | 1997 | 40,100 | Good |
| E 10TH St over I229 | 1995 | 35,954 | Fair |
| I229 over W 57TH St | 1995 | 34,780 | Good |
| I029 S over Skunk Ck | 1989 | 33,310 | Fair |
| I029 N over Skunk Ck | 1989 | 33,310 | Fair |
All bridges nearby: Minnehaha County, SD bridge conditions · every bridge in Minnehaha County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.