Horton Hill Rd. over Marks Brook
New Haven County, Connecticut · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Horton Hill Rd. over Marks Brook in New Haven County, Connecticut, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1940, making it 85 years old at the 2025 inventory.
- It carries about 2,700 vehicles a day (traffic count year 2018).
- Its listed owner is a town or township highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (41.46975, -73.00914)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 4 | Poor condition |
Bridge details
| Structure | Steel culvert |
| Length | about 25 ft |
| Location | .13 mi. north of Route 63 |
| NBI structure number | 06913 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Connecticut department of transportation.
All bridges nearby: New Haven County, CT bridge conditions · Connecticut bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.