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Csah 3 over I 35

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

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

Csah 3 over I 35 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 substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1968, making it 57 years old at the 2025 inventory.
It carries about 368 vehicles a day (traffic count year 2022).
Its listed owner is the state 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 209 ft
Location	14.2 Mi N of Jct Th 95
NBI structure number	13810
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