SD034 W over James Rv
Sanborn County, South Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SD034 W over James Rv in Sanborn County, South Dakota, 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 2003, making it 22 years old at the 2025 inventory.
- It carries about 1,484 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 29 of the 54 inventoried bridges in Sanborn County rated fair (53.7%); 7 (13.0%) 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 2024, on a 48-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 → (44.01323, -98.09443)
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 | Prestressed concrete stringer or multi-beam girder |
| Length | about 332 ft |
| Location | 0.9 SE of Forestburg |
| NBI structure number | 000000056118127 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2024 |
| Inspection interval (item 91) | 48 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 South Dakota department of transportation.
Busiest bridges in Sanborn County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SD034 over Drainage Ditch | 1936 | 1,738 | Fair |
| SD034 E over James Rv | 2004 | 1,484 | Fair |
| SD037 S over Sand Ck | 1977 | 1,354 | Good |
| SD037 N over Sand Ck | 1976 | 1,354 | Good |
| SD037 S over James Rv | 2002 | 1,271 | Good |
| SD037 N over James Rv | 1992 | 1,271 | Good |
All bridges nearby: Sanborn County, SD bridge conditions · every bridge in Sanborn County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.