US Bridges

I 90 over RR Csx/Mbta

Fair

Middlesex County, Massachusetts · .2 MI E.Charles Rv S11 · Structure no. N120674QNDOTNBI

Built
1965
60 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
116 ft
1 main span
Daily traffic
106,825
2019 count
Owner
State
State Highway Agency

About this bridge

I 90 over RR Csx/Mbta is a steel stringer/multi-beam or girder carrying I 90 over RR Csx/Mbta in Middlesex County, Massachusetts. It was built in 1965, so it is 60 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 106,825 vehicles a day, roughly 4% of them trucks, projected to reach 146,150 by 2031. The structure is 116 ft (35.4 m) long and 91 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI 90
CrossesRR Csx/Mbta
Location.2 MI E.Charles Rv S11
RouteInterstate 90
CountyMiddlesex County
StateMassachusetts
Coordinates42.34325, -71.25464
Functional classUrban Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.1 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length116 ft (35.4 m)
Longest span95 ft (29 m)
Deck width91 ft (27.7 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic106,825 (2019)
Projected traffic146,150 by 2031
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$9.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 over RR Csx/Mbta built?

It was built in 1965, making it 60 years old in 2025.

What condition is I 90 over RR Csx/Mbta 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 March 2023.

How much traffic does I 90 over RR Csx/Mbta carry?

About 106,825 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is I 90 over RR Csx/Mbta?

The structure is 116 ft (35.4 m) long with a longest span of 95 ft (29 m) and a deck 91 ft wide.

Who owns I 90 over RR Csx/Mbta?

It is owned by the State Highway Agency.