Darlington County Bridge Report Card

Darlington County scores 78 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C78 / 100

Local infrastructure snapshot

Darlington County, South Carolina

Darlington County has 173 bridges in the National Bridge Inventory, with 11 rated poor and 5 rated scour-critical. Its poor-condition share of 6.4% is above the 6.3% statewide average. Poor-condition bridges carry about 15,500 daily vehicle crossings.

173Total Bridges

11Poor (6.4%)

107Fair (61.8%)

5Scour-Critical

Quote-Ready Local Facts

6.4%of county bridges are in poor condition, compared with 6.3% statewide and 6.7% nationally.

15,500daily vehicle crossings are on poor-condition bridges in the county.

5bridges are rated scour-critical, or 2.9% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Darlington County a Bridge Condition Exposure Score of 78/100 (C). The county has 173 bridges in the National Bridge Inventory, including 11 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 15,500 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	6.4%	12.7
Poor-condition traffic exposure	25	2.4% of measured traffic	1.8
Scour-critical bridge share	20	2.9%	5.8
Average age vs national baseline	10	51 years vs 48 nationally	1.5
Traffic-data completeness	5	642,202 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	6.4%
State Poor-Condition Share	6.3%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.9%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	15,500 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeS-16-18 over Black Creek — 3,700 vehicles/day Oldest Listed BridgeUS 15 over Sparrow Swamp — built in 1922 All County BridgesBrowse every bridge record in Darlington County.

Top Bridges to Watch in Darlington County

Bridge	Reason	Condition	Daily Traffic	Year Built
S-16-18 over Black Creek	Poor condition + traffic exposure	Poor	3,700	1969
US 15 over Little Seed Tick Creek	Poor condition + traffic exposure	Poor	3,000	1931
US 15 over Big Seed Tick Creek	Poor condition + traffic exposure	Poor	3,000	1931
S-16-1040 over Black Creek	Poor condition + traffic exposure	Poor	2,500	1980
S-16-185 over Swift Creek	Poor condition + traffic exposure	Poor	1,000	1978
S-16-13 over Swift Creek	Poor condition + traffic exposure	Poor	900	1979
S-16-19 over Boggy Swamp	Poor condition + traffic exposure	Poor	450	1956
S-16-41 over Flat Creek	Poor condition + traffic exposure	Poor	375	1965
S-16-290 over Boggy Gully Swamp	Poor condition + traffic exposure	Poor	275	1980
S-16-697 over Newman & Sparrow Swamp	Poor condition + traffic exposure	Poor	175	1966

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.