Lee County Bridge Report Card

Lee County scores 76 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C76 / 100

Local infrastructure snapshot

Lee County, Illinois

Lee County has 373 bridges in the National Bridge Inventory, with 42 rated poor and 1 rated scour-critical. Its poor-condition share of 11.3% is above the 9.5% statewide average. Poor-condition bridges carry about 9,380 daily vehicle crossings.

373Total Bridges

42Poor (11.3%)

184Fair (49.3%)

1Scour-Critical

Quote-Ready Local Facts

11.3%of county bridges are in poor condition, compared with 9.5% statewide and 6.7% nationally.

9,380daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 0.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Lee County a Bridge Condition Exposure Score of 76/100 (C). The county has 373 bridges in the National Bridge Inventory, including 42 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 9,380 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	11.3%	22.5
Poor-condition traffic exposure	25	1.4% of measured traffic	1.0
Scour-critical bridge share	20	0.3%	0.5
Average age vs national baseline	10	45 years vs 48 nationally	0.0
Traffic-data completeness	5	684,315 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	11.3%
State Poor-Condition Share	9.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.3%
Average Bridge Age	45 years
Poor-Condition Traffic Exposure	9,380 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCh 1 Lost Nation R over Franklin Creek — 1,900 vehicles/day Oldest Listed BridgeIndian Head RD over Green Rv Drainage Di — built in 1901 All County BridgesBrowse every bridge record in Lee County.

Top Bridges to Watch in Lee County

Bridge	Reason	Condition	Daily Traffic	Year Built
Ch 1 Lost Nation R over Franklin Creek	Poor condition + traffic exposure	Poor	1,900	1957
Steward RD over Trib Of Steward Crk	Poor condition + traffic exposure	Poor	650	1969
Franklin RD over Franklin Creek	Poor condition + traffic exposure	Poor	625	1958
Reynolds Rd.-fas 1 over Stream	Poor condition + traffic exposure	Poor	600	1991
Franklin Road over Br Of Franklin CR	Poor condition + traffic exposure	Poor	550	1966
Fas-188 (ch-15) over Five Mile Branch	Poor condition + traffic exposure	Poor	450	1962
Inlet Road over Br Of Green River	Poor condition + traffic exposure	Poor	400	1962
Sterling Road over Br Of Green River	Poor condition + traffic exposure	Poor	375	1968
Ch-15 Indian Head over Red Oak Ditch	Poor condition + traffic exposure	Poor	300	1956
Naylor Road (tr61) over Chamberlain Creek	Poor condition + traffic exposure	Poor	300	1992

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.