Richland County Bridge Report Card

Richland County scores 75 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C75 / 100

Local infrastructure snapshot

Richland County, South Carolina

Richland County has 367 bridges in the National Bridge Inventory, with 17 rated poor and 25 rated scour-critical. Its poor-condition share of 4.6% is at or below the 6.3% statewide average. Poor-condition bridges carry about 140,670 daily vehicle crossings.

367Total Bridges

17Poor (4.6%)

168Fair (45.8%)

25Scour-Critical

Quote-Ready Local Facts

4.6%of county bridges are in poor condition, compared with 6.3% statewide and 6.7% nationally.

140,670daily vehicle crossings are on poor-condition bridges in the county.

25bridges are rated scour-critical, or 6.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Richland County a Bridge Condition Exposure Score of 75/100 (C). The county has 367 bridges in the National Bridge Inventory, including 17 in poor condition and 25 rated scour-critical. Poor-condition bridges carry about 140,670 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	4.6%	9.3
Poor-condition traffic exposure	25	2.4% of measured traffic	1.8
Scour-critical bridge share	20	6.8%	13.6
Average age vs national baseline	10	46 years vs 48 nationally	0.0
Traffic-data completeness	5	5,881,330 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	4.6%
State Poor-Condition Share	6.3%
National Poor-Condition Share	6.7%
County Scour-Critical Share	6.8%
Average Bridge Age	46 years
Poor-Condition Traffic Exposure	140,670 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI-77 SB over US 21 — 36,350 vehicles/day Oldest Listed BridgeL-40-454 over Br Of Congaree River — built in 1910 All County BridgesBrowse every bridge record in Richland County.

Top Bridges to Watch in Richland County

Bridge	Reason	Condition	Daily Traffic	Year Built
S-40-1367 over Boney Creek	Poor condition + traffic exposure	Poor	1,050	1983
S-40-1600 over Unnamed	Poor condition + traffic exposure	Poor	100	1966
I-77 SB over US 21	Poor condition + traffic exposure	Poor	36,350	1976
US 1 over I-77	Poor condition + traffic exposure	Poor	31,000	1977
US 76 over Rr Csxt	Poor condition + traffic exposure	Poor	21,600	1939
US 76 over US 601	Poor condition + traffic exposure	Poor	19,100	1957
US 321 over Crane Creek	Poor condition + traffic exposure	Poor	14,900	1927
US 601 over Colonels Creek	Poor condition + traffic exposure	Poor	5,700	1939
Sc 215 over Big Cedar Creek	Poor condition + traffic exposure	Poor	3,200	1928
Sc 215 over Little River	Poor condition + traffic exposure	Poor	2,500	1928

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.