ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA
PoorPosted for loadMiddlesex County, Massachusetts · .1 MI S of Medford ST · Structure no. S170244E3DOTNBI
- Built
- 1958
- 67 years old, rebuilt 1983
- Condition
- Poor
- inspected July 2023
- Type
- Girder and Floorbeam System
- Steel
- Length
- 400 ft
- 4 main spans
- Daily traffic
- 18,436
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA is a steel girder and floorbeam system carrying ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA in Middlesex County, Massachusetts. It was built in 1958 and reconstructed in 1983, so it is 67 years old, older 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 18,436 vehicles a day, roughly 10% of them trucks, projected to reach 82,124 by 2032. The structure is 400 ft (121.9 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1983.
What condition is ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA 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 July 2023.
How much traffic does ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA carry?
About 18,436 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA?
The structure is 400 ft (121.9 m) long with a longest span of 126 ft (38.4 m) and a deck 88 ft wide.
Who owns ST 28 Mcgrath HWY over Comb Som Ave Ext & MBTA?
It is owned by the State Highway Agency.