Route 8 Northbound over Porter Street
New Haven County, Connecticut · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Route 8 Northbound over Porter Street in New Haven County, Connecticut, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1965, making it 60 years old at the 2025 inventory.
- It carries about 25,300 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 585 of the 893 inventoried bridges in New Haven County rated fair (65.5%); 33 (3.7%) 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 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 → (41.54226, -73.04455)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 95 ft |
| Location | 1 Mi South of I-84 Inter. |
| NBI structure number | 03184A |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Connecticut department of transportation.
Busiest bridges in New Haven County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 95 over Canal Dock Road | 2015 | 187,800 | Good |
| Interstate-95 over West River & SR 745 | 2018 | 142,200 | Good |
| Route 71 over Sodom Brook | 2019 | 141,900 | Good |
| Interstate-91 over I-91 Ramp 002 | 1965 | 141,200 | Fair |
| Interstate-91&rt15 over Willow Brook | 1964 | 136,800 | Fair |
| Interstate-91 over Grand Avenue | 1965 | 135,400 | Fair |
All bridges nearby: New Haven County, CT bridge conditions · every bridge in New Haven County · Connecticut bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.