T-11.9 337 over Trib. to Mill Creek
Washington County, Kansas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-11.9 337 over Trib. to Mill Creek in Washington 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 1996, making it 29 years old at the 2025 inventory.
- It carries about 48 vehicles a day (traffic count year 2014).
- Its listed owner is the county highway agency.
- It is one of 189 of the 335 inventoried bridges in Washington County rated good (56.4%); 12 (3.6%) 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 24-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 → (39.84397, -97.01264)
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 | Steel stringer or multi-beam girder |
| Length | about 29 ft |
| Location | 2.0E 2.1N of Washington |
| NBI structure number | 001010855003209 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kansas department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US36 Hwy over Mill Creek Drainage | 1936 | 2,657 | Fair |
| US36 over Mill Creek | 1999 | 2,657 | Good |
| US36 Hwy over Little Blue River Drg. | 1938 | 2,452 | Good |
| US36 over Lane Branch Creek | 1999 | 2,452 | Good |
| U36 over Little Blue River | 1999 | 2,452 | Good |
| K15 Hwy over Mill Creek | 2020 | 2,329 | Good |
All bridges nearby: Washington County, KS bridge conditions · every bridge in Washington County · Kansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.