S-45-220 over Dickie Swamp

Williamsburg County, South Carolina · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• S-45-220 over Dickie Swamp in Williamsburg County, South Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
• It was built in 2005, making it 20 years old at the 2025 inventory.
• It carries about 125 vehicles a day (traffic count year 2023).
• Its listed owner is the state highway agency.
• It is one of 77 of the 194 inventoried bridges in Williamsburg County rated good (39.7%); 12 (6.2%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• Its condition class and component ratings are unchanged from the 2024 inventory.
• Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (33.62328, -79.89133)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.

Busiest bridges in Williamsburg County

All bridges nearby: Williamsburg County, SC bridge conditions · every bridge in Williamsburg County · South Carolina bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.