US Bridges

HWY Squantum ST over I 93 /US1/ST3

Poor

Norfolk County, Massachusetts · 2.4 KM S of JCT I93&SR3A · Structure no. M250183FBDOTNBI

Built
1954
71 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
2 main spans
Daily traffic
19,500
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Squantum ST over I 93 /US1/ST3 is a steel stringer/multi-beam or girder carrying HWY Squantum ST over I 93 /US1/ST3 in Norfolk County, Massachusetts. It was built in 1954, so it is 71 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 19,500 vehicles a day, roughly 4% of them trucks, projected to reach 28,743 by 2031. The structure is 150 ft (45.7 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Squantum ST
CrossesI 93 /US1/ST3
Location2.4 KM S of JCT I93&SR3A
RouteCity Street 0
CountyNorfolk County
StateMassachusetts
Coordinates42.26273, -71.04451
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.7 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length150 ft (45.7 m)
Longest span72 ft (21.9 m)
Deck width54 ft (16.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2024)
Projected traffic28,743 by 2031
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$7.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Squantum ST over I 93 /US1/ST3 built?

It was built in 1954, making it 71 years old in 2025.

What condition is HWY Squantum ST over I 93 /US1/ST3 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does HWY Squantum ST over I 93 /US1/ST3 carry?

About 19,500 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is HWY Squantum ST over I 93 /US1/ST3?

The structure is 150 ft (45.7 m) long with a longest span of 72 ft (21.9 m) and a deck 54 ft wide.

Who owns HWY Squantum ST over I 93 /US1/ST3?

It is owned by the State Highway Agency.