US Bridges

I 91 SB over HWY Westfield RD

Fair

Hampden County, Massachusetts · Mm 13.6 on I-91 SB · Structure no. H210480YCDOTNBI

Built
1965
60 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
3 main spans
Daily traffic
24,476
2023 count
Owner
State
State Highway Agency

About this bridge

I 91 SB over HWY Westfield RD is a steel stringer/multi-beam or girder carrying I 91 SB over HWY Westfield RD in Hampden 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 6 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 24,476 vehicles a day, roughly 14% of them trucks, projected to reach 54,644 by 2031. The structure is 150 ft (45.7 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 91 SB
CrossesHWY Westfield RD
LocationMm 13.6 on I-91 SB
RouteInterstate 91
CountyHampden County
StateMassachusetts
Coordinates42.19129, -72.63828
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span75 ft (22.9 m)
Deck width55 ft (16.7 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,476 (2023)
Projected traffic54,644 by 2031
Trucks14%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
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$7.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 SB over HWY Westfield RD built?

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

What condition is I 91 SB over HWY Westfield RD 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 I 91 SB over HWY Westfield RD carry?

About 24,476 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I 91 SB over HWY Westfield RD?

The structure is 150 ft (45.7 m) long with a longest span of 75 ft (22.9 m) and a deck 55 ft wide.

Who owns I 91 SB over HWY Westfield RD?

It is owned by the State Highway Agency.