US Bridges

HWY Dorchstr Ave over Comb Haul RD & MBTA Red

FairPosted for load

Suffolk County, Massachusetts · 1.8 KM SW of D ST · Structure no. B161993H6DOT634

Built
1917
108 years old, rebuilt 1959
Condition
Fair
inspected November 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
101 ft
2 main spans
Daily traffic
34,913
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Dorchstr Ave over Comb Haul RD & MBTA Red is a steel continuous girder and floorbeam system carrying HWY Dorchstr Ave over Comb Haul RD & MBTA Red in Suffolk County, Massachusetts. It was built in 1917 and reconstructed in 1959, so it is 108 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 34,913 vehicles a day, roughly 7% of them trucks, projected to reach 39,956 by 2032. The structure is 101 ft (30.9 m) long and 60 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesHWY Dorchstr Ave
CrossesComb Haul RD & MBTA Red
Location1.8 KM SW of D ST
RouteCity Street 0
Coordinates42.33906, -71.05708
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.3 US tons
Inventory rating25.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length101 ft (30.9 m)
Longest span48 ft (14.7 m)
Deck width60 ft (18.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,913 (2023)
Projected traffic39,956 by 2032
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Dorchstr Ave over Comb Haul RD & MBTA Red built?

It was built in 1917, making it 108 years old in 2025. It was reconstructed in 1959.

What condition is HWY Dorchstr Ave over Comb Haul RD & MBTA Red in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does HWY Dorchstr Ave over Comb Haul RD & MBTA Red carry?

About 34,913 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is HWY Dorchstr Ave over Comb Haul RD & MBTA Red?

The structure is 101 ft (30.9 m) long with a longest span of 48 ft (14.7 m) and a deck 60 ft wide.

Who owns HWY Dorchstr Ave over Comb Haul RD & MBTA Red?

It is owned by the State Highway Agency.