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I-75 SB to US-23 N over I-75 NB

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

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

I-75 SB to US-23 N over I-75 NB in Arenac County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1968, making it 57 years old at the 2025 inventory.
It carries about 2,283 vehicles a day (traffic count year 2007).
Its listed owner is the state highway agency.
It is one of 43 of the 80 inventoried bridges in Arenac County rated fair (53.8%); 12 (15.0%) 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	Steel stringer or multi-beam girder
Length	about 346 ft
Location	5.0 Mi SW of Standish
NBI structure number	000000000000428
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-75 Nb\|us-23 NB over Sunsmith Drain	1968	27,470	Fair
US-23\|MAIN St over Middle Br Pine River	1994	14,971	Fair
Sterling Road over I-75 NB	1968	14,350	Poor
I-75 Sb\|us-23 SB over S Br Pine River	1968	13,735	Fair
I-75 Nb\|us-23 NB over S Br Pine River	1968	13,735	Fair
US-23\|W Huron Rd over N Br Pine River	2001	9,170	Good