US Bridges

HWY Harvard ST over Comb I 90 & Csx/Mbta

Fair

Middlesex County, Massachusetts · .8 KM S. Charles Rv S24 · Structure no. N120204R3DOTNBI

Built
1964
61 years old, rebuilt 2010
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
181 ft
3 main spans
Daily traffic
3,879
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Harvard ST over Comb I 90 & Csx/Mbta is a steel stringer/multi-beam or girder carrying HWY Harvard ST over Comb I 90 & Csx/Mbta in Middlesex County, Massachusetts. It was built in 1964 and reconstructed in 2010, so it is 61 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 3,879 vehicles a day, roughly 3% of them trucks, projected to reach 1,106 by 2032. The structure is 181 ft (55.1 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Harvard ST
CrossesComb I 90 & Csx/Mbta
Location.8 KM S. Charles Rv S24
RouteInterstate 90
CountyMiddlesex County
StateMassachusetts
Coordinates42.35243, -71.20211
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating45.3 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length181 ft (55.1 m)
Longest span71 ft (21.5 m)
Deck width42 ft (12.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,879 (2023)
Projected traffic1,106 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.9 mi (3 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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Harvard ST over Comb I 90 & Csx/Mbta built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2010.

What condition is HWY Harvard ST over Comb I 90 & 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 July 2023.

How much traffic does HWY Harvard ST over Comb I 90 & Csx/Mbta carry?

About 3,879 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is HWY Harvard ST over Comb I 90 & Csx/Mbta?

The structure is 181 ft (55.1 m) long with a longest span of 71 ft (21.5 m) and a deck 42 ft wide.

Who owns HWY Harvard ST over Comb I 90 & Csx/Mbta?

It is owned by the State Highway Agency.