S. Walnut ST/US13 over Norfolk Southern

New Castle County, Delaware · rated Fair in the 2025 National Bridge Inventory

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

• S. Walnut ST/US13 over Norfolk Southern in New Castle County, Delaware, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
• It was built in 1938 and reconstructed in 1994, making it 87 years old at the 2025 inventory.
• It carries about 25,312 vehicles a day (traffic count year 2023).
• Its listed owner is the state highway agency.
• It is one of 314 of the 528 inventoried bridges in New Castle County rated fair (59.5%); 5 (0.9%) are rated poor.
• A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

View this bridge on a map → (39.7245, -75.55575)

Component ratings

Bridge details

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

Busiest bridges in New Castle County

All bridges nearby: New Castle County, DE bridge conditions · every bridge in New Castle County · Delaware bridges.

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