Union County Bridge Report Card

Union County scores 85 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B85 / 100

Local infrastructure snapshot

Union County, Illinois

Union County has 188 bridges in the National Bridge Inventory, with 7 rated poor and 1 rated scour-critical. Its poor-condition share of 3.7% is at or below the 9.5% statewide average. Poor-condition bridges carry about 24,950 daily vehicle crossings.

188Total Bridges

7Poor (3.7%)

80Fair (42.6%)

1Scour-Critical

Quote-Ready Local Facts

3.7%of county bridges are in poor condition, compared with 9.5% statewide and 6.7% nationally.

24,950daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 0.5% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Union County a Bridge Condition Exposure Score of 85/100 (B). The county has 188 bridges in the National Bridge Inventory, including 7 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 24,950 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	3.7%	7.4
Poor-condition traffic exposure	25	8.7% of measured traffic	6.5
Scour-critical bridge share	20	0.5%	1.1
Average age vs national baseline	10	44 years vs 48 nationally	0.0
Traffic-data completeness	5	286,810 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	3.7%
State Poor-Condition Share	9.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.5%
Average Bridge Age	44 years
Poor-Condition Traffic Exposure	24,950 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeFai 57 SB & US 51 over Fas 926-big Creek — 6,700 vehicles/day Oldest Listed BridgeTr 17 over Creek — built in 1900 All County BridgesBrowse every bridge record in Union County.

Top Bridges to Watch in Union County

Bridge	Reason	Condition	Daily Traffic	Year Built
Fai 57 SB & US 51 over Fas 926-big Creek	Poor condition + traffic exposure	Poor	6,700	1959
I 57 NB & US 51 NB over Fas 926-big Creek	Poor condition + traffic exposure	Poor	6,700	1959
Ill 146 over Cypress Creek	Poor condition + traffic exposure	Poor	4,650	1931
Ill 146 over Clear Creek	Poor condition + traffic exposure	Poor	4,050	1976
Fas 924 over Bradshaw CR	Poor condition + traffic exposure	Poor	2,150	1981
Ch 3 over Little Creek	Poor condition + traffic exposure	Poor	600	1935
Tr 295 over Crooked Creek	Poor condition + traffic exposure	Poor	100	1900
Priv Entr Off Ill1 over Cany Creek	Scour-critical foundation rating	Fair	0	1942
Fai 57 over Lick Creek	High traffic	Fair	15,900	1960
I 57 over N.fork Lick Creek	High traffic	Fair	15,900	1960

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.