I 495 NB over St110 /st113/merrimack
Poor Condition63 years old58,225 vehicles/day
Location
| State | Massachusetts |
| County | Essex |
| Location | At Merrimac River |
| Carries | I 495 NB |
| Crosses | St110 /st113/merrimack |
| Coordinates | 42.75322, -71.12880 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 3 (Serious) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 172.6 ft (52.6 m) |
| Max Span | 67.9 ft (20.7 m) |
| Deck Width | 52.2 ft (15.9 m) |
| Deck Area | 836.3 sq m |
| Main Spans | 3 |
| Year Built | 1963 |
Traffic
| Avg Daily Traffic | 58,225 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 6 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | M170312XHDOTNBI |