US Bridges

HWY Amer Leg HWY over ST203 Morton ST

Good

Suffolk County, Massachusetts · 5.3 KM W of Rt 93 · Structure no. B16217B61MUNNBI

Built
2012
13 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
97 ft
1 main span
Daily traffic
27,200
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

HWY Amer Leg HWY over ST203 Morton ST is a steel stringer/multi-beam or girder carrying HWY Amer Leg HWY over ST203 Morton ST in Suffolk County, Massachusetts. It was built in 2012, so it is 13 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 27,200 vehicles a day, roughly 4% of them trucks. The structure is 97 ft (29.7 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 Amer Leg HWY
CrossesST203 Morton ST
Location5.3 KM W of Rt 93
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.29191, -71.09577
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.1 US tons
Inventory rating51.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length97 ft (29.7 m)
Longest span91 ft (27.7 m)
Deck width77 ft (23.6 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic27,200 (2024)
Projected traffic—
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$13 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Amer Leg HWY over ST203 Morton ST built?

It was built in 2012, making it 13 years old in 2025.

What condition is HWY Amer Leg HWY over ST203 Morton ST 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 August 2024.

How much traffic does HWY Amer Leg HWY over ST203 Morton ST carry?

About 27,200 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is HWY Amer Leg HWY over ST203 Morton ST?

The structure is 97 ft (29.7 m) long with a longest span of 91 ft (27.7 m) and a deck 77 ft wide.

Who owns HWY Amer Leg HWY over ST203 Morton ST?

It is owned by the City or Municipal Highway Agency.