Gratiot County Bridge Report Card

Gratiot County scores 39 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F39 / 100

Local infrastructure snapshot

Gratiot County, Michigan

Gratiot County has 167 bridges in the National Bridge Inventory, with 22 rated poor and 35 rated scour-critical. Its poor-condition share of 13.2% is above the 11.0% statewide average. Poor-condition bridges carry about 67,873 daily vehicle crossings.

167Total Bridges

22Poor (13.2%)

81Fair (48.5%)

35Scour-Critical

Quote-Ready Local Facts

13.2%of county bridges are in poor condition, compared with 11.0% statewide and 6.7% nationally.

67,873daily vehicle crossings are on poor-condition bridges in the county.

35bridges are rated scour-critical, or 21.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Gratiot County a Bridge Condition Exposure Score of 39/100 (F). The county has 167 bridges in the National Bridge Inventory, including 22 in poor condition and 35 rated scour-critical. Poor-condition bridges carry about 67,873 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	13.2%	26.3
Poor-condition traffic exposure	25	18.0% of measured traffic	13.5
Scour-critical bridge share	20	21.0%	20.0
Average age vs national baseline	10	50 years vs 48 nationally	1.1
Traffic-data completeness	5	376,957 measured daily crossings	0.0

Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.

County Comparisons

County Poor-Condition Share	13.2%
State Poor-Condition Share	11.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	21.0%
Average Bridge Age	50 years
Poor-Condition Traffic Exposure	67,873 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeM-46 & Us-127br over Us-127 — 11,219 vehicles/day Oldest Listed BridgeJohnson Road over River Styx Drain — built in 1900 All County BridgesBrowse every bridge record in Gratiot County.

Top Bridges to Watch in Gratiot County

Bridge	Reason	Condition	Daily Traffic	Year Built
M-46 over Seville Sumner Drain	Poor condition + traffic exposure	Poor	5,634	1936
Luce Road over Pine River	Poor condition + traffic exposure	Poor	3,850	1957
Lumber Jack Road over Pine River	Poor condition + traffic exposure	Poor	1,190	1947
Riverview Drive over Drain #96	Poor condition + traffic exposure	Poor	790	1968
Mcclelland Road over Beaver Creek Drain	Poor condition + traffic exposure	Poor	118	1941
Pingree Road over North Shade Drain	Poor condition + traffic exposure	Poor	80	1968
Ferris Road over Bass Lake Drain	Poor condition + traffic exposure	Poor	72	1910
Taft Road over Bovee Drain	Poor condition + traffic exposure	Poor	56	1900
M-46 & Us-127br over Us-127	Poor condition + traffic exposure	Poor	11,219	1961
Us-127 SB over Us-127 Br (polk Rd)	Poor condition + traffic exposure	Poor	9,181	1961

Important safety note

Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.