SD037 over 4TH Ave BNSF RR
Davison County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SD037 over 4TH Ave BNSF RR in Davison 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 1997, making it 28 years old at the 2025 inventory.
- It carries about 7,642 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 41 of the 123 inventoried bridges in Davison County rated good (33.3%); 22 (17.9%) 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 March 2023, 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 → (43.71261, -98.04567)
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 234 ft |
| Location | 1.4 N I 90 Interchange |
| NBI structure number | 000000018141093 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2023 |
| Inspection interval (item 91) | 48 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 Davison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sanborn St (SD37) over BNSF RR | 2001 | 13,545 | Fair |
| Sanborn St (SD37) over Dry Run Ck | 2001 | 13,545 | Good |
| South Burr Street over Dry Run Ck | 1990 | 11,950 | Good |
| SD037 over I090 | 1966 | 10,351 | Fair |
| SD037 over Dry Run Ck | 1996 | 9,756 | Good |
| I090 W over SD037S | 1966 | 7,206 | Fair |
All bridges nearby: Davison County, SD bridge conditions · every bridge in Davison County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.