Mille Lacs County Bridge Report Card

Mille Lacs County scores 73 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C73 / 100

Local infrastructure snapshot

Mille Lacs County, Minnesota

Mille Lacs County has 107 bridges in the National Bridge Inventory, with 8 rated poor and 6 rated scour-critical. Its poor-condition share of 7.5% is above the 4.5% statewide average. Poor-condition bridges carry about 4,970 daily vehicle crossings.

107Total Bridges

8Poor (7.5%)

46Fair (43.0%)

6Scour-Critical

Quote-Ready Local Facts

7.5%of county bridges are in poor condition, compared with 4.5% statewide and 6.7% nationally.

4,970daily vehicle crossings are on poor-condition bridges in the county.

6bridges are rated scour-critical, or 5.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Mille Lacs County a Bridge Condition Exposure Score of 73/100 (C). The county has 107 bridges in the National Bridge Inventory, including 8 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 4,970 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	7.5%	15.0
Poor-condition traffic exposure	25	1.8% of measured traffic	1.3
Scour-critical bridge share	20	5.6%	11.2
Average age vs national baseline	10	39 years vs 48 nationally	0.0
Traffic-data completeness	5	281,010 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	7.5%
State Poor-Condition Share	4.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	5.6%
Average Bridge Age	39 years
Poor-Condition Traffic Exposure	4,970 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCsah 12 over W Br Rum River — 1,700 vehicles/day Oldest Listed BridgeMn 27 over Rum River — built in 1955 All County BridgesBrowse every bridge record in Mille Lacs County.

Top Bridges to Watch in Mille Lacs County

Bridge	Reason	Condition	Daily Traffic	Year Built
Csah 12 over W Br Rum River	Poor condition + traffic exposure	Poor	1,700	1974
Csah 13 over W Br Rum River	Poor condition + traffic exposure	Poor	640	1971
Csah 25 over Rum River	Poor condition + traffic exposure	Poor	1,050	1973
Csah 5 over Estes Brook	Poor condition + traffic exposure	Poor	600	1968
Csah 20 over Rum River	Poor condition + traffic exposure	Poor	520	1966
Csah 19 over Rum River	Poor condition + traffic exposure	Poor	300	1970
Csah 13 over Estes Brook	Poor condition + traffic exposure	Poor	120	1960
CR 121 over Estes Brook	Poor condition + traffic exposure	Poor	40	2013
Csah 18 over W Br Rum River	Scour-critical foundation rating	Fair	1,550	1977
Csah 11 over Rum River	Scour-critical foundation rating	Fair	1,300	1969

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.