3RD Avenue SE over Moccasin Creek
Brown County, South Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 3RD Avenue SE over Moccasin Creek in Brown County, South Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 5,087 vehicles a day (traffic count year 2022).
- Its listed owner is a city or municipal highway agency.
- It is one of 55 of the 170 inventoried bridges in Brown County rated good (32.4%); 20 (11.8%) are rated poor.
- 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 → (45.46216, -98.46197)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 85 ft |
| Location | 3RD Ave. SE - Aberdeen |
| NBI structure number | 000000007126328 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Brown County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US012 over Moccasin Ck | 1954 | 21,635 | Poor |
| Second Street over First Ave NW | 2003 | 11,055 | Fair |
| Second Street over Burlington Northern RR | 2003 | 11,055 | Fair |
| Second Street over Railroad Ave SW | 2003 | 11,055 | Fair |
| US281 over BNSF Railroad | 2001 | 4,468 | Fair |
| US281 over Foot Ck | 1971 | 3,968 | Fair |
All bridges nearby: Brown County, SD bridge conditions · every bridge in Brown County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.