Douglas County Bridge Report Card

Douglas County scores 96 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A96 / 100

Local infrastructure snapshot

Douglas County, Illinois

Douglas County has 233 bridges in the National Bridge Inventory, with 4 rated poor and 0 rated scour-critical. Its poor-condition share of 1.7% is at or below the 9.5% statewide average. Poor-condition bridges carry about 4,500 daily vehicle crossings.

233Total Bridges

4Poor (1.7%)

56Fair (24.0%)

0Scour-Critical

Quote-Ready Local Facts

1.7%of county bridges are in poor condition, compared with 9.5% statewide and 6.7% nationally.

4,500daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Douglas County a Bridge Condition Exposure Score of 96/100 (A). The county has 233 bridges in the National Bridge Inventory, including 4 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 4,500 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	1.7%	3.4
Poor-condition traffic exposure	25	1.4% of measured traffic	1.0
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	43 years vs 48 nationally	0.0
Traffic-data completeness	5	325,320 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	1.7%
State Poor-Condition Share	9.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	43 years
Poor-Condition Traffic Exposure	4,500 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeFap 323(us 36) over Kaskaskia River — 3,550 vehicles/day Oldest Listed BridgeTr 57 over Drainage Ditch — built in 1900 All County BridgesBrowse every bridge record in Douglas County.

Top Bridges to Watch in Douglas County

Bridge	Reason	Condition	Daily Traffic	Year Built
Fap 323(us 36) over Kaskaskia River	Poor condition + traffic exposure	Poor	3,550	1927
Fas 669(ch 7) over Brushy Fork	Poor condition + traffic exposure	Poor	500	1933
Main ST (ms#2300) over Embarras River	Poor condition + traffic exposure	Poor	225	1955
Tr 49 over Hackett Branch	Poor condition + traffic exposure	Poor	225	1956
I-57 over Stream	High traffic	Good	22,700	1968
I-57 (nb) over Fap 323(us 36)	High traffic	Good	11,050	1968
I-57 (sb) over Fap 323(us 36)	High traffic	Good	11,050	1968
I-57 (nb) over Uprr & Decatur&estrn Ilr	High traffic	Fair	11,050	1969
I-57 (sb) over Uprr & Decatur&estrn Ilr	High traffic	Fair	11,050	1969
I-57 (nb) over Hayes Branch	High traffic	Fair	11,050	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.