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Kniss Road over North Br Manistee River

Kalkaska County, Michigan · rated Poor in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

View this bridge on a map → (44.66991, -85.00754)

Component ratings

ComponentRating (2024)Rating (2025)FHWA scale meaning
Deck22Critical condition
Superstructure22Critical condition
Substructure22Critical condition

Bridge details

StructureSteel stringer or multi-beam girder
Lengthabout 27 ft
Location2 Mile E of Sigma
NBI structure number000000000004705
Condition classPoor
Traffic status (item 41)Closed to all traffic
Last inspection (item 90)August 2024
Inspection interval (item 91)24 months
Scour (item 113)8: foundations stable, scour above the top of the footing

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

Busiest bridges in Kalkaska County

BridgeBuiltVehicles/dayCondition
Us-131|m-66|m-72|s over N Br Boardman River19408,567Fair
N Rapid City Road over Rapid River19835,800Good
Boardman Road over Boardman River19881,700Fair
Aarwood Road over Rapid River20121,340Good
M-66 over Manistee River19791,150Fair
W Sharon Road over Manistee River19581,060Good

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

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