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M-52 over N Br Bad River

Saginaw County, Michigan · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

View this bridge on a map → (43.30199, -84.14389)

Component ratings

ComponentRating (2024)Rating (2025)FHWA scale meaning
Deck66Satisfactory condition
Superstructure77Good condition
Substructure66Satisfactory condition

Bridge details

StructurePrestressed concrete stringer or multi-beam girder
Lengthabout 99 ft
LocationIn St Charles
NBI structure number000000000009063
Condition classFair
Traffic status (item 41)Open, no restriction
Last inspection (item 90)July 2023
Inspection interval (item 91)24 months
Scour (item 113)3: scour critical: foundations unstable for the assessed or calculated scour

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

Busiest bridges in Saginaw County

BridgeBuiltVehicles/dayCondition
I-75 NB over Cass River196156,192Good
I-75 US-10 over CSX RR196147,480Fair
I-75 US-10 over CSX RR195846,000Fair
I-75 SB over CSX RR195838,000Fair
I-75 NB over CSX RR202132,900Good
I-75 SB over CSX RR202132,900Fair

All bridges nearby: Saginaw County, MI bridge conditions · every bridge in Saginaw County · Michigan bridges.

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