US Bridges

HWY Chestnut ST over Comb I 90 & Csx/Mbta

Fair

Middlesex County, Massachusetts · .8 KM W. Armory S19 · Structure no. N120254R0DOTNBI

Built
1964
61 years old, rebuilt 1994
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
156 ft
3 main spans
Daily traffic
7,241
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Chestnut ST over Comb I 90 & Csx/Mbta is a steel stringer/multi-beam or girder carrying HWY Chestnut ST over Comb I 90 & Csx/Mbta in Middlesex County, Massachusetts. It was built in 1964 and reconstructed in 1994, 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 7,241 vehicles a day, roughly 5% of them trucks, projected to reach 12,161 by 2031. The structure is 156 ft (47.5 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHWY Chestnut ST
CrossesComb I 90 & Csx/Mbta
Location.8 KM W. Armory S19
RouteInterstate 90
CountyMiddlesex County
StateMassachusetts
Coordinates42.34827, -71.22517
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.9 US tons
Inventory rating45.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length156 ft (47.5 m)
Longest span61 ft (18.5 m)
Deck width52 ft (15.9 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,241 (2024)
Projected traffic12,161 by 2031
Trucks5%
Lanes on structure2
Traffic directionOne-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$7.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1994.

What condition is HWY Chestnut 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 February 2024.

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

About 7,241 vehicles per day (2024 count), of which roughly 5% are trucks.

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

The structure is 156 ft (47.5 m) long with a longest span of 61 ft (18.5 m) and a deck 52 ft wide.

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

It is owned by the State Highway Agency.