Cth Dd over Spafford Creek
Lafayette County, Wisconsin · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth Dd over Spafford Creek in Lafayette County, Wisconsin, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1959, making it 66 years old at the 2025 inventory.
- It carries about 94 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 21 of the 217 inventoried bridges in Lafayette County rated poor (9.7%); 21 (9.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: superstructure 6 to 5.
- Its most recent inspection on record is dated September 2024, on a 12-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (42.52088, -89.91142)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 6 | 5 | Fair condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 52 ft |
| Location | 1.8M W Jct Sth 176 |
| NBI structure number | P33024400000000 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Lafayette County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sth 23-sth 81-main over Pecatonica River | 1968 | 10,400 | Fair |
| Ush 151 over Galena R Headwaters | 2004 | 9,800 | Fair |
| Ush 151 NB over Cottage Inn Branch | 2002 | 5,250 | Fair |
| Ush 151 SB over Cottage Inn Branch | 2003 | 5,250 | Good |
| Ush 151 NB over Lrd Private Drive/pecato | 2002 | 5,250 | Good |
| Ush 151 SB over Pecatonica River | 2003 | 5,250 | Good |
All bridges nearby: Lafayette County, WI bridge conditions · every bridge in Lafayette County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.