Rs 406 11A over Marias Des Cygnes River
Linn County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rs 406 11A over Marias Des Cygnes River in Linn County, Kansas, 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 1999, making it 26 years old at the 2025 inventory.
- It carries about 35 vehicles a day (traffic count year 2006).
- Its listed owner is the county highway agency.
- It is one of 165 of the 257 inventoried bridges in Linn County rated good (64.2%); 13 (5.1%) 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 → (38.27154, -94.71494)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 304 ft |
| Location | 0.5 NE of Boicourt |
| NBI structure number | 000000000540045 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Linn County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U-69 Hwy NB over East 2400 Road | 2005 | 3,791 | Good |
| U-69 Hwy SB over East 2400 Road | 2008 | 3,791 | Good |
| US69 Hwy NB over K152 Hwy | 1964 | 3,109 | Good |
| US69 Hwy SB over North Sugar Creek | 1982 | 3,109 | Good |
| U-69 Hwy NB over North Sugar Creek | 2006 | 3,109 | Good |
| U-69 Hwy SB over K-152 Hwy | 2005 | 3,109 | Good |
All bridges nearby: Linn County, KS bridge conditions · every bridge in Linn County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.