Grant Ave. over Mill Creek
New Castle County, Delaware · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Grant Ave. over Mill Creek in New Castle County, Delaware, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2022, making it 3 years old at the 2025 inventory.
- It carries about 99 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 209 of the 528 inventoried bridges in New Castle County rated good (39.6%); 5 (0.9%) 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 December 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 → (39.78485, -75.70018)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 33 ft |
| Location | Hockessin |
| NBI structure number | 1180 000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Delaware department of transportation.
Busiest bridges in New Castle County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I95 / Jfk Mem Hgwy over Norfolk Southern | 1962 | 117,657 | Fair |
| I 95 NB over Christina Creek | 1962 | 109,932 | Fair |
| I 95 SB over Christina Creek | 1962 | 109,932 | Fair |
| I95SB/JFK Mem Hgwy over SR1/KOREAN War Vet Mem | 1963 | 103,953 | Fair |
| I 95 NB over SR1/KOREAN War Vet Mem | 1963 | 103,953 | Fair |
| I 495 over Terminal Ave Rd 359 | 1972 | 101,111 | Fair |
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.