US Bridges

HWY Chestnut ST over I 91

FairPosted for load

Hampshire County, Massachusetts · Mm 28.7 on I-91 · Structure no. H1102813DDOTNBI

Built
1963
62 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
256 ft
5 main spans
Daily traffic
1,940
2020 count
Owner
State
State Highway Agency

About this bridge

HWY Chestnut ST over I 91 is a steel stringer/multi-beam or girder carrying HWY Chestnut ST over I 91 in Hampshire County, Massachusetts. It was built in 1963, so it is 62 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,940 vehicles a day, roughly 20% of them trucks, projected to reach 2,369 by 2031. The structure is 256 ft (77.9 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesHWY Chestnut ST
CrossesI 91
LocationMm 28.7 on I-91
RouteCity Street 0
CountyHampshire County
StateMassachusetts
Coordinates42.38174, -72.63139
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 alignment8: Equal to present desirable criteria
Operating rating41.3 US tons
Inventory rating20.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length256 ft (77.9 m)
Longest span61 ft (18.6 m)
Deck width41 ft (12.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,940 (2020)
Projected traffic2,369 by 2031
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 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$9.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Chestnut ST over I 91 built?

It was built in 1963, making it 62 years old in 2025.

What condition is HWY Chestnut ST over I 91 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 HWY Chestnut ST over I 91 carry?

About 1,940 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is HWY Chestnut ST over I 91?

The structure is 256 ft (77.9 m) long with a longest span of 61 ft (18.6 m) and a deck 41 ft wide.

Who owns HWY Chestnut ST over I 91?

It is owned by the State Highway Agency.