Bridge conditions in Sussex County, Delaware
154 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Sussex County tracks close to typical: 3 of its 154 inventoried bridges (1.9%) are rated poor, against a national rate of about 7%.
- 3 of the 154 bridges in Sussex County, Delaware, are rated in poor condition (1.9%) in the 2025 National Bridge Inventory, as of .
- 61 bridges (39.6%) are rated good and 90 (58.4%) fair.
- The median Sussex County bridge was built in 1975.
- The busiest poor-rated bridge is SR 54 over Assawoman Bay (built 1957), carrying about 11,464 vehicles a day.
Good 39.6% · Fair 58.4% · Poor 1.9% of 154 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 54 over Assawoman Bay | 1957 | 11,464 | Poor |
| Craigs Mill Rd over Craigs Pond Spillway | 1973 | 196 | Poor |
| Cods Road over Slaughter Creek | 1931 | 78 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Coastal HGWY/SR1NB over Ped Path | 1967 | 35,563 | Fair |
| Coastal HWY/SR1 SB over Ped Path | 1967 | 35,563 | Fair |
| Coastal HWY/SR1 SB over Lewes Rehoboth Canal | 1978 | 31,200 | Fair |
| US 13 N & SR 20 W over Williams Pond | 1952 | 31,002 | Fair |
| SR1 / Coastal Hgwy over Indian River Inlet | 2012 | 24,984 | Good |
| US113/DUPONT Blvd over Betts Pond | 1912 | 24,039 | Fair |
| Dupont BLVD/US113 over Wartons Branch | 1911 | 23,985 | Fair |
| US 113/DUPONT Blvd over Vines Creek | 1948 | 23,620 | Fair |
| Sussex Hgwy / US13 over Gravelly Run | 1951 | 23,386 | Fair |
| Sussex HWY/US13 NB over Records Pond | 1951 | 23,291 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Delaware: Delaware bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.