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Northrop Street over Christiana Creek

Cass County, Michigan · rated Good in the 2025 National Bridge Inventory

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

Northrop Street over Christiana Creek in Cass County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 2008, making it 17 years old at the 2025 inventory.
It carries about 143 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 13 of the 53 inventoried bridges in Cass County rated good (24.5%); 8 (15.1%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 56 ft
Location	0.25 Mi E of Chain Lk St
NBI structure number	000000000013268
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US-12 over M-60	1960	9,010	Fair
M-51 over Dowagiac Creek	1949	8,127	Fair
US-12 over Christiana Creek	1941	8,072	Fair
US-12 over Brandywine Creek	1982	7,438	Fair
M-62 over Dowagiac Creek	1950	7,355	Fair
US-12 over Valley Creek	2011	7,350	Good