US Bridges

HWY West ST over RR Amtrak/Mbta

Fair

Suffolk County, Massachusetts · .53 KM N of Cleary Sq. · Structure no. B161083HLDOT634

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
121 ft
2 main spans
Daily traffic
27,155
2024 count
Owner
State
State Highway Agency

About this bridge

HWY West ST over RR Amtrak/Mbta is a steel continuous stringer/multi-beam or girder carrying HWY West ST over RR Amtrak/Mbta in Suffolk County, Massachusetts. It was built in 1986, so it is 39 years old, younger 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 6 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 27,155 vehicles a day, roughly 5% of them trucks, projected to reach 19,741 by 2032. The structure is 121 ft (36.9 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY West ST
CrossesRR Amtrak/Mbta
Location.53 KM N of Cleary Sq.
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.26219, -71.12349
Functional classUrban Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating42.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span77 ft (23.5 m)
Deck width49 ft (14.9 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,155 (2024)
Projected traffic19,741 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY West ST over RR Amtrak/Mbta built?

It was built in 1986, making it 39 years old in 2025.

What condition is HWY West ST over RR Amtrak/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 October 2024.

How much traffic does HWY West ST over RR Amtrak/Mbta carry?

About 27,155 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is HWY West ST over RR Amtrak/Mbta?

The structure is 121 ft (36.9 m) long with a longest span of 77 ft (23.5 m) and a deck 49 ft wide.

Who owns HWY West ST over RR Amtrak/Mbta?

It is owned by the State Highway Agency.