US Bridges

HWY Morton ST over RR MBTA

Good

Suffolk County, Massachusetts · .8KM SW of JCTSR28&SR203 · Structure no. B16163B2TDOT634

Built
2015
10 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
1 main span
Daily traffic
40,862
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Morton ST over RR MBTA is a steel stringer/multi-beam or girder carrying HWY Morton ST over RR MBTA in Suffolk County, Massachusetts. It was built in 2015, so it is 10 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40,862 vehicles a day, roughly 7% of them trucks. The structure is 76 ft (23.2 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Morton ST
CrossesRR MBTA
Location.8KM SW of JCTSR28&SR203
RouteState Highway 203
CountySuffolk County
StateMassachusetts
Coordinates42.28102, -71.08549
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating64.3 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length76 ft (23.2 m)
Longest span48 ft (14.6 m)
Deck width77 ft (23.6 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,862 (2024)
Projected traffic—
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Morton ST over RR MBTA built?

It was built in 2015, making it 10 years old in 2025.

What condition is HWY Morton ST over RR MBTA in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does HWY Morton ST over RR MBTA carry?

About 40,862 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is HWY Morton ST over RR MBTA?

The structure is 76 ft (23.2 m) long with a longest span of 48 ft (14.6 m) and a deck 77 ft wide.

Who owns HWY Morton ST over RR MBTA?

It is owned by the State Highway Agency.