Dillon County Bridge Report Card

Dillon County scores 61 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D61 / 100

Local infrastructure snapshot

Dillon County, South Carolina

Dillon County has 129 bridges in the National Bridge Inventory, with 14 rated poor and 8 rated scour-critical. Its poor-condition share of 10.9% is above the 6.3% statewide average. Poor-condition bridges carry about 22,575 daily vehicle crossings.

129Total Bridges

14Poor (10.9%)

83Fair (64.3%)

8Scour-Critical

Quote-Ready Local Facts

10.9%of county bridges are in poor condition, compared with 6.3% statewide and 6.7% nationally.

22,575daily vehicle crossings are on poor-condition bridges in the county.

8bridges are rated scour-critical, or 6.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Dillon County a Bridge Condition Exposure Score of 61/100 (D). The county has 129 bridges in the National Bridge Inventory, including 14 in poor condition and 8 rated scour-critical. Poor-condition bridges carry about 22,575 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	10.9%	21.7
Poor-condition traffic exposure	25	3.9% of measured traffic	3.0
Scour-critical bridge share	20	6.2%	12.4
Average age vs national baseline	10	53 years vs 48 nationally	1.9
Traffic-data completeness	5	572,725 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	10.9%
State Poor-Condition Share	6.3%
National Poor-Condition Share	6.7%
County Scour-Critical Share	6.2%
Average Bridge Age	53 years
Poor-Condition Traffic Exposure	22,575 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSc 9 over Ropers Mill Branch — 8,300 vehicles/day Oldest Listed BridgeSc 9 over Ropers Mill Branch — built in 1920 All County BridgesBrowse every bridge record in Dillon County.

Top Bridges to Watch in Dillon County

Bridge	Reason	Condition	Daily Traffic	Year Built
Sc 9 over Ropers Mill Branch	Poor condition + traffic exposure	Poor	8,300	1920
Sc 34 over I-95	Poor condition + traffic exposure	Poor	7,200	1966
S-17-198 over S.c.l. Railroad	Poor condition + traffic exposure	Poor	1,900	1961
Sc 917 over Csx Railroad	Poor condition + traffic exposure	Poor	1,550	1948
Sc 57 over Beaverdam Creek	Poor condition + traffic exposure	Poor	1,150	1941
S-17-61 over Hayes Swamp	Poor condition + traffic exposure	Poor	550	1956
S-17-22 over Little Pee Dee River	Poor condition + traffic exposure	Poor	450	1962
S-17-22 over Bear Swamp	Poor condition + traffic exposure	Poor	450	1984
S-17-54 over Catfish Canal	Poor condition + traffic exposure	Poor	250	1976
S-17-192 over Sweet Swamp	Poor condition + traffic exposure	Poor	225	1956

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.