Bridge conditions in Marquette County, Wisconsin
81 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
5 of the 81 bridges the federal inventory lists in Marquette County are rated poor; the rest split 29 good and 47 fair.
- 5 of the 81 bridges in Marquette County, Wisconsin, are rated in poor condition (6.2%) in the 2025 National Bridge Inventory, as of .
- 29 bridges (35.8%) are rated good and 47 (58.0%) fair.
- The median Marquette County bridge was built in 1987.
- The busiest poor-rated bridge is Cth O over Fox River (built 1961), carrying about 923 vehicles a day.
Good 35.8% · Fair 58.0% · Poor 6.2% of 81 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Cth O over Fox River | 1961 | 923 | Poor |
| Cth E over Montello River | 1966 | 600 | Poor |
| Lrd Dover Rd over Mecan River | 1977 | 153 | Poor |
| Lrd 14TH Rd over Cnw RR | 1940 | 95 | Poor |
| Lrd 16TH Rd over Cnw RR | 1950 | 47 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih Ush 51-ih 39 over Chapman Creek | 1985 | 17,800 | Fair |
| Ih Ush51-ih39 NB over Cth O | 1983 | 15,800 | Fair |
| Ih Ush51-ih39 SB over Cth O | 1983 | 15,800 | Fair |
| Ih Ush 51 - Ih 39 over Sth 23/82 EB & WB | 2016 | 14,700 | Good |
| Ih Ush51-ih39 NB over Lrd Dover Court | 1987 | 13,000 | Good |
| Ih Ush51-ih39 SB over Lrd Fawn Ave | 1966 | 12,800 | Fair |
| Ih Ush51-ih39 NB over Lrd Fawn Ave | 1986 | 12,800 | Fair |
| Ih 39 Sb-ush 51 SB over Neenah Creek | 1959 | 9,030 | Fair |
| Ih Ush51-ih 39 SB over Lrd Dover Court | 1987 | 9,000 | Good |
| Ih Ush51-ih39 NB over Neenah Creek | 1984 | 8,900 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Wisconsin: Wisconsin bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.