Crawford County Bridge Report Card

Crawford County scores 50 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F50 / 100

Local infrastructure snapshot

Crawford County, Michigan

Crawford County has 55 bridges in the National Bridge Inventory, with 6 rated poor and 4 rated scour-critical. Its poor-condition share of 10.9% is at or below the 11.0% statewide average. Poor-condition bridges carry about 24,178 daily vehicle crossings.

55Total Bridges

6Poor (10.9%)

40Fair (72.7%)

4Scour-Critical

Quote-Ready Local Facts

10.9%of county bridges are in poor condition, compared with 11.0% statewide and 6.7% nationally.

24,178daily vehicle crossings are on poor-condition bridges in the county.

4bridges are rated scour-critical, or 7.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Crawford County a Bridge Condition Exposure Score of 50/100 (F). The county has 55 bridges in the National Bridge Inventory, including 6 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 24,178 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	10.9%	21.8
Poor-condition traffic exposure	25	14.6% of measured traffic	10.9
Scour-critical bridge share	20	7.3%	14.5
Average age vs national baseline	10	54 years vs 48 nationally	2.4
Traffic-data completeness	5	165,930 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	10.9%
State Poor-Condition Share	11.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	7.3%
Average Bridge Age	54 years
Poor-Condition Traffic Exposure	24,178 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI-75 SB over Lake State Rr — 5,877 vehicles/day Oldest Listed BridgeStephan Bridge RD over Au Sable River — built in 1900 All County BridgesBrowse every bridge record in Crawford County.

Top Bridges to Watch in Crawford County

Bridge	Reason	Condition	Daily Traffic	Year Built
I-75 SB over Lake State Rr	Poor condition + traffic exposure	Poor	5,877	1961
I-75 NB over Lake State Rr	Poor condition + traffic exposure	Poor	5,877	1961
I-75 SB over M-72\|huron ST	Poor condition + traffic exposure	Poor	5,877	1961
I-75 NB over M-72\|huron ST	Poor condition + traffic exposure	Poor	5,877	1961
County RD 612 over N Br Au Sable River	Poor condition + traffic exposure	Poor	409	1961
N Down River RD over Big Creek	Poor condition + traffic exposure	Poor	261	1948
I-75 NB over E Br Au Sable River	Scour-critical foundation rating	Fair	9,772	1961
I-75 NB over Au Sable River	Scour-critical foundation rating	Fair	8,126	1960
I-75 SB over Au Sable River	Scour-critical foundation rating	Fair	8,125	1960
M-72 over S Br Au Sable River	Scour-critical foundation rating	Fair	2,140	1958

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.