Cth-cb over Drainage Ditch
Winnebago County, Wisconsin · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth-cb over Drainage Ditch in Winnebago County, Wisconsin, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1998, making it 27 years old at the 2025 inventory.
- It carries about 9,100 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 163 of the 265 inventoried bridges in Winnebago County rated good (61.5%); 8 (3.0%) 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 October 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 → (44.22097, -88.49508)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 26 ft |
| Location | 0.17M N Jct Ush 10 |
| NBI structure number | B70018000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Winnebago County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 41 over S Br Mud Creek | 1935 | 88,300 | Fair |
| Ih 41 over Neenah Slough | 1975 | 65,700 | Fair |
| Ih 41 over Trib Lake Butte Des Mort | 2011 | 59,900 | Good |
| Ush 10 Wb/sth 441 over Cth Ap (midway Rd) | 2018 | 52,300 | Good |
| Ih 41 SB over Menasha Creek | 1992 | 52,000 | Fair |
| Ih 41 NB over Menasha Creek | 1992 | 52,000 | Fair |
All bridges nearby: Winnebago County, WI bridge conditions · every bridge in Winnebago County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.