US Bridges

HWY Fairmont Ave over Comb Walnut ST & MBTA

Fair

Suffolk County, Massachusetts · 1 MI W of SR138/NEP Pkw. · Structure no. B161693HMDOT634

Built
1908
117 years old, rebuilt 1984
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
174 ft
3 main spans
Daily traffic
14,483
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Fairmont Ave over Comb Walnut ST & MBTA is a steel continuous stringer/multi-beam or girder carrying HWY Fairmont Ave over Comb Walnut ST & MBTA in Suffolk County, Massachusetts. It was built in 1908 and reconstructed in 1984, so it is 117 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.

It carries about 14,483 vehicles a day, roughly 4% of them trucks, projected to reach 30,165 by 2031. The structure is 174 ft (53 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Fairmont Ave
CrossesComb Walnut ST & MBTA
Location1 MI W of SR138/NEP Pkw.
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.25364, -71.11942
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.6 US tons
Inventory rating36.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53 m)
Longest span76 ft (23.2 m)
Deck width53 ft (16.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,483 (2024)
Projected traffic30,165 by 2031
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$8.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Fairmont Ave over Comb Walnut ST & MBTA built?

It was built in 1908, making it 117 years old in 2025. It was reconstructed in 1984.

What condition is HWY Fairmont Ave over Comb Walnut ST & MBTA 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 September 2024.

How much traffic does HWY Fairmont Ave over Comb Walnut ST & MBTA carry?

About 14,483 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is HWY Fairmont Ave over Comb Walnut ST & MBTA?

The structure is 174 ft (53 m) long with a longest span of 76 ft (23.2 m) and a deck 53 ft wide.

Who owns HWY Fairmont Ave over Comb Walnut ST & MBTA?

It is owned by the State Highway Agency.