US Bridges

ST105 Front ST over I 195

Fair

Plymouth County, Massachusetts · .7 MI N of US 6 · Structure no. M0500647XDOTNBI

Built
1971
54 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
235 ft
2 main spans
Daily traffic
5,971
2024 count
Owner
State
State Highway Agency

About this bridge

ST105 Front ST over I 195 is a steel continuous stringer/multi-beam or girder carrying ST105 Front ST over I 195 in Plymouth County, Massachusetts. It was built in 1971, so it is 54 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 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 5,971 vehicles a day, roughly 13% of them trucks, projected to reach 18,952 by 2031. The structure is 235 ft (71.6 m) long and 98 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST105 Front ST
CrossesI 195
Location.7 MI N of US 6
RouteState Highway 105
CountyPlymouth County
StateMassachusetts
Coordinates41.72442, -70.77569
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionNovember 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating30.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length235 ft (71.6 m)
Longest span114 ft (34.7 m)
Deck width98 ft (29.8 m)
Roadway width89 ft (27 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,971 (2024)
Projected traffic18,952 by 2031
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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$20.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST105 Front ST over I 195 built?

It was built in 1971, making it 54 years old in 2025.

What condition is ST105 Front ST over I 195 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 November 2024.

How much traffic does ST105 Front ST over I 195 carry?

About 5,971 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is ST105 Front ST over I 195?

The structure is 235 ft (71.6 m) long with a longest span of 114 ft (34.7 m) and a deck 98 ft wide.

Who owns ST105 Front ST over I 195?

It is owned by the State Highway Agency.