US Bridges

I 91 SB over HWY Lwr Westfield RD

Fair

Hampden County, Massachusetts · Mm 12.4 on I-91 SB · Structure no. H210470YADOTNBI

Built
1965
60 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
89 ft
1 main span
Daily traffic
24,467
2023 count
Owner
State
State Highway Agency

About this bridge

I 91 SB over HWY Lwr Westfield RD is a steel stringer/multi-beam or girder carrying I 91 SB over HWY Lwr 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 24,467 vehicles a day, roughly 9% of them trucks, projected to reach 52,038 by 2032. The structure is 89 ft (27 m) long and 55 ft wide.

Location

Open in Google Maps
CarriesI 91 SB
CrossesHWY Lwr Westfield RD
LocationMm 12.4 on I-91 SB
RouteInterstate 91
CountyHampden County
StateMassachusetts
Coordinates42.17428, -72.64412
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 alignment7: Better than present minimum criteria
Operating rating59.1 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length89 ft (27 m)
Longest span85 ft (25.9 m)
Deck width55 ft (16.7 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,467 (2023)
Projected traffic52,038 by 2032
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$4.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 SB over HWY Lwr Westfield RD built?

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

What condition is I 91 SB over HWY Lwr 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 January 2025.

How much traffic does I 91 SB over HWY Lwr Westfield RD carry?

About 24,467 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I 91 SB over HWY Lwr Westfield RD?

The structure is 89 ft (27 m) long with a longest span of 85 ft (25.9 m) and a deck 55 ft wide.

Who owns I 91 SB over HWY Lwr Westfield RD?

It is owned by the State Highway Agency.