Blue Earth County Bridge Report Card

Blue Earth County scores 63 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D63 / 100

Local infrastructure snapshot

Blue Earth County, Minnesota

Blue Earth County has 193 bridges in the National Bridge Inventory, with 12 rated poor and 17 rated scour-critical. Its poor-condition share of 6.2% is above the 4.5% statewide average. Poor-condition bridges carry about 57,207 daily vehicle crossings.

193Total Bridges

12Poor (6.2%)

93Fair (48.2%)

17Scour-Critical

Quote-Ready Local Facts

6.2%of county bridges are in poor condition, compared with 4.5% statewide and 6.7% nationally.

57,207daily vehicle crossings are on poor-condition bridges in the county.

17bridges are rated scour-critical, or 8.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Blue Earth County a Bridge Condition Exposure Score of 63/100 (D). The county has 193 bridges in the National Bridge Inventory, including 12 in poor condition and 17 rated scour-critical. Poor-condition bridges carry about 57,207 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	6.2%	12.4
Poor-condition traffic exposure	25	9.0% of measured traffic	6.8
Scour-critical bridge share	20	8.8%	17.6
Average age vs national baseline	10	43 years vs 48 nationally	0.0
Traffic-data completeness	5	633,583 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	6.2%
State Poor-Condition Share	4.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	8.8%
Average Bridge Age	43 years
Poor-Condition Traffic Exposure	57,207 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUnu 169 over Minn R Up Rr; Street — 22,949 vehicles/day Oldest Listed BridgeMn 68 over Morgan Creek — built in 1935 All County BridgesBrowse every bridge record in Blue Earth County.

Top Bridges to Watch in Blue Earth County

Bridge	Reason	Condition	Daily Traffic	Year Built
Csah 29 over Maple River	Poor condition + traffic exposure	Poor	465	1956
Csah 10 over Perch Creek	Poor condition + traffic exposure	Poor	125	1955
Unu 169 over Minn R Up Rr; Street	Poor condition + traffic exposure	Poor	22,949	1985
US 14 over N Riverfront DR	Poor condition + traffic exposure	Poor	16,250	1977
US 14 over N Riverfront DR	Poor condition + traffic exposure	Poor	15,742	1977
Csah 9 over Blue Earth River	Poor condition + traffic exposure	Poor	572	1985
Csah 25 over Perch Creek	Poor condition + traffic exposure	Poor	305	1940
Csah 14 over Stream	Poor condition + traffic exposure	Poor	299	1960
Csah 4 over Big Cobb River	Poor condition + traffic exposure	Poor	253	1963
CR 156 over Maple River	Poor condition + traffic exposure	Poor	141	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.