CR 52 over Caldwell Brook

Koochiching County, Minnesota · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• CR 52 over Caldwell Brook in Koochiching County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
• It was built in 1978, making it 47 years old at the 2025 inventory.
• It carries about 15 vehicles a day (traffic count year 2008).
• Its listed owner is the county highway agency.
• It is one of 41 of the 98 inventoried bridges in Koochiching County rated fair (41.8%); 6 (6.1%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• It was rated good in the 2024 inventory and is now fair (culvert 7 to 6).
• Its most recent inspection on record is dated September 2023, on a 24-month routine inspection cycle.
• A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

View this bridge on a map → (47.92665, -94.07015)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the Minnesota department of transportation.

Busiest bridges in Koochiching County

All bridges nearby: Koochiching County, MN bridge conditions · every bridge in Koochiching County · Minnesota bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.