Cth P over Ashippun River
Dodge County, Wisconsin · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth P over Ashippun River in Dodge County, Wisconsin, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1999, making it 26 years old at the 2025 inventory.
- It carries about 2,800 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 102 of the 213 inventoried bridges in Dodge County rated good (47.9%); 6 (2.8%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It does not appear under this structure number in the 2024 inventory (a new or renumbered structure).
- Its most recent inspection on record is dated May 2024, on a 48-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 → (43.23618, -88.45822)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 20 ft |
| Location | 1.3M N Jct Cth O |
| NBI structure number | B14014200000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 48 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 Dodge County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 41 over Br E Br Rock River | 1994 | 34,200 | Fair |
| Ush 151 over Beaver Dam River | 1996 | 21,600 | Fair |
| Ush 151 NB over Cth W | 1996 | 21,100 | Good |
| Ush 151 SB over Sth 33 | 2012 | 12,050 | Fair |
| Ush 151 NB over Sth 33 EB | 2012 | 12,050 | Good |
| Ush 151 SB over Lrd Prospect Ave | 2012 | 12,050 | Fair |
All bridges nearby: Dodge County, WI bridge conditions · every bridge in Dodge County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.