US 1 over HWY Merrimac ST
PoorPosted for loadEssex County, Massachusetts · .1 MI S Merrimac River · Structure no. N110132TCDOTNBI
- Built
- 1976
- 49 years old
- Condition
- Poor
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 385 ft
- 3 main spans
- Daily traffic
- 12,065
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 1 over HWY Merrimac ST is a steel continuous stringer/multi-beam or girder carrying US 1 over HWY Merrimac ST in Essex County, Massachusetts. It was built in 1976, so it is 49 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 12,065 vehicles a day, roughly 2% of them trucks, projected to reach 24,637 by 2031. The structure is 385 ft (117.5 m) long and 60 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 1 over HWY Merrimac ST built?
It was built in 1976, making it 49 years old in 2025.
What condition is US 1 over HWY Merrimac ST in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.
How much traffic does US 1 over HWY Merrimac ST carry?
About 12,065 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is US 1 over HWY Merrimac ST?
The structure is 385 ft (117.5 m) long with a longest span of 80 ft (24.4 m) and a deck 60 ft wide.
Who owns US 1 over HWY Merrimac ST?
It is owned by the State Highway Agency.