Missaukee County Bridge Report Card

Missaukee County scores 69 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D69 / 100

Local infrastructure snapshot

Missaukee County, Michigan

Missaukee County has 39 bridges in the National Bridge Inventory, with 4 rated poor and 1 rated scour-critical. Its poor-condition share of 10.3% is at or below the 11.0% statewide average. Poor-condition bridges carry about 2,647 daily vehicle crossings.

39Total Bridges

4Poor (10.3%)

15Fair (38.5%)

1Scour-Critical

Quote-Ready Local Facts

10.3%of county bridges are in poor condition, compared with 11.0% statewide and 6.7% nationally.

2,647daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 2.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Missaukee County a Bridge Condition Exposure Score of 69/100 (D). The county has 39 bridges in the National Bridge Inventory, including 4 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 2,647 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	10.3%	20.5
Poor-condition traffic exposure	25	7.6% of measured traffic	5.7
Scour-critical bridge share	20	2.6%	5.1
Average age vs national baseline	10	47 years vs 48 nationally	0.0
Traffic-data completeness	5	34,942 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	10.3%
State Poor-Condition Share	11.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.6%
Average Bridge Age	47 years
Poor-Condition Traffic Exposure	2,647 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeForward Road over Clam River — 1,316 vehicles/day Oldest Listed BridgeM-66|s Burkett RD over Middle Br Clam River — built in 1929 All County BridgesBrowse every bridge record in Missaukee County.

Top Bridges to Watch in Missaukee County

Bridge	Reason	Condition	Daily Traffic	Year Built
Forward Road over Clam River	Poor condition + traffic exposure	Poor	1,316	1958
Stoney Corner Road over Clam River	Poor condition + traffic exposure	Poor	600	1960
13 Mile Road over Butterfield Creek	Poor condition + traffic exposure	Poor	451	1988
Lotan Road over Mosquito Creek	Poor condition + traffic exposure	Poor	280	1965
M-55\|e Houghton La over W Br Muskegon River	Scour-critical foundation rating	Fair	4,338	1931
M-55\|w Watergate R over Clam River	High traffic	Fair	5,113	1973
M-55\|e Houghton La over Muskegon River	High traffic	Fair	4,338	1935
M-66\|w Stoney Corn over N Br Clam River	High traffic	Fair	4,081	1933
M-66 over Clam River	High traffic	Fair	2,696	1929
M-66\|s Burkett RD over Middle Br Clam River	High traffic	Fair	2,466	1929

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.