SH 21 Madison Co over Kings River
Madison County, Arkansas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 21 Madison Co over Kings River in Madison County, Arkansas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1959, making it 66 years old at the 2025 inventory.
- It carries about 1,600 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 94 of the 149 inventoried bridges in Madison County rated fair (63.1%); 20 (13.4%) 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 January 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 → (36.09923, -93.54385)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 301 ft |
| Location | 2.96 Mi S Jct US412&SH21 |
| NBI structure number | 000000000003263 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 6: scour evaluation not yet made |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arkansas department of transportation.
Busiest bridges in Madison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 412 Madison over Branch | 2012 | 12,000 | Fair |
| U S 412 Madison over Branch | 2012 | 10,994 | Fair |
| US 412 Madison Co. over Holman Creek & SH 23 | 1998 | 7,999 | Good |
| U.S. 412 Madison over War Eagle Creek | 1960 | 7,800 | Fair |
| U.S. 412 Madison over Creek | 1950 | 7,800 | Fair |
| US 412 S4 Madison over Onion Creek | 2001 | 6,400 | Fair |
All bridges nearby: Madison County, AR bridge conditions · every bridge in Madison County · Arkansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.