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CR 56 over Rock Creek

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

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

CR 56 over Rock Creek in Chisago County, Minnesota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1976, making it 49 years old at the 2025 inventory.
It carries about 129 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 28 of the 61 inventoried bridges in Chisago County rated fair (45.9%); 1 (1.6%) are rated poor.
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.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 79 ft
Location	0.2 Mi S of Jct Csah 3
NBI structure number	13509
Condition class	Fair

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

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