SD037 S over James Rv
Sanborn County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SD037 S over James Rv in Sanborn County, South Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2002, making it 23 years old at the 2025 inventory.
- It carries about 1,271 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 18 of the 54 inventoried bridges in Sanborn County rated good (33.3%); 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 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 → (43.94294, -98.03076)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 353 ft |
| Location | 4.6 Mile South Jnct SD34 |
| NBI structure number | 000000056149176 |
| Condition class | Good |
| 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 W over James Rv | 2003 | 1,484 | 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 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.