US Bridges

I 93 Rmps X Xe over RR Amtrak/Mbta

Good

Suffolk County, Massachusetts · I93&I90 Int .4K SW P.O. · Structure no. B166679QPDOTNBI

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
142 ft
3 main spans
Daily traffic
2,316
2023 count
Owner
State
State Highway Agency

About this bridge

I 93 Rmps X Xe over RR Amtrak/Mbta is a steel continuous box beam or girders - multiple carrying I 93 Rmps X Xe over RR Amtrak/Mbta in Suffolk County, Massachusetts. It was built in 2005, so it is 20 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 2,316 vehicles a day, roughly 8% of them trucks, projected to reach 2,532 by 2032. The structure is 142 ft (43.3 m) long and 29 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI 93 Rmps X Xe
CrossesRR Amtrak/Mbta
LocationI93&I90 Int .4K SW P.O.
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.34603, -71.06051
Functional classUrban Principal Arterial - Interstate

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 inspectionApril 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length142 ft (43.3 m)
Longest span96 ft (29.3 m)
Deck width29 ft (8.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,316 (2023)
Projected traffic2,532 by 2032
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 Rmps X Xe over RR Amtrak/Mbta built?

It was built in 2005, making it 20 years old in 2025.

What condition is I 93 Rmps X Xe over RR Amtrak/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 April 2023.

How much traffic does I 93 Rmps X Xe over RR Amtrak/Mbta carry?

About 2,316 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is I 93 Rmps X Xe over RR Amtrak/Mbta?

The structure is 142 ft (43.3 m) long with a longest span of 96 ft (29.3 m) and a deck 29 ft wide.

Who owns I 93 Rmps X Xe over RR Amtrak/Mbta?

It is owned by the State Highway Agency.