Bridge conditions in Chisago County, Minnesota
61 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Chisago County tracks close to typical: 1 of its 61 inventoried bridges (1.6%) are rated poor, against a national rate of about 7%.
- 1 of the 61 bridges in Chisago County, Minnesota, are rated in poor condition (1.6%) in the 2025 National Bridge Inventory, as of .
- 32 bridges (52.5%) are rated good and 28 (45.9%) fair.
- The median Chisago County bridge was built in 1991.
- The busiest poor-rated bridge is Mn 243 over St Croix River (built 1953), carrying about 5,686 vehicles a day.
Good 52.5% · Fair 45.9% · Poor 1.6% of 61 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 |
|---|---|---|---|
| Mn 243 over St Croix River | 1953 | 5,686 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 35 over Rush Creek | 1967 | 27,920 | Fair |
| Mn 95 over I 35 | 2010 | 20,467 | Good |
| US 8 over Channel | 2012 | 19,638 | Good |
| US 61 over I 35 | 1967 | 14,200 | Fair |
| US 61 over S Br Sunrise River | 1967 | 14,200 | Good |
| US 8 over Center Lake Channel | 2005 | 13,800 | Fair |
| US 8 over St Croix River | 1955 | 13,300 | Fair |
| Mn 95 over N Br Sunrise River | 1947 | 8,536 | Fair |
| Csah 30 over N Br Sunrise River | 1950 | 7,049 | Fair |
| Csah 19 over I 35 | 1967 | 6,600 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Minnesota: Minnesota 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.