US Bridges

I 91 NB over ST141 WB

Fair

Hampden County, Massachusetts · Mm 15.2 on I-91 NB · Structure no. H210530YLDOTNBI

Built
1965
60 years old, rebuilt 1986
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
91 ft
1 main span
Daily traffic
27,094
2016 count
Owner
State
State Highway Agency

About this bridge

I 91 NB over ST141 WB is a steel stringer/multi-beam or girder carrying I 91 NB over ST141 WB in Hampden County, Massachusetts. It was built in 1965 and reconstructed in 1986, 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 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 27,094 vehicles a day, roughly 8% of them trucks, projected to reach 113,552 by 2032. The structure is 91 ft (27.8 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 91 NB
CrossesST141 WB
LocationMm 15.2 on I-91 NB
RouteInterstate 91
CountyHampden County
StateMassachusetts
Coordinates42.21293, -72.63271
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating49.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length91 ft (27.8 m)
Longest span86 ft (26.3 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,094 (2016)
Projected traffic113,552 by 2032
Trucks8%
Lanes on structure2
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 NB over ST141 WB built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1986.

What condition is I 91 NB over ST141 WB 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 October 2023.

How much traffic does I 91 NB over ST141 WB carry?

About 27,094 vehicles per day (2016 count), of which roughly 8% are trucks.

How long is I 91 NB over ST141 WB?

The structure is 91 ft (27.8 m) long with a longest span of 86 ft (26.3 m) and a deck 47 ft wide.

Who owns I 91 NB over ST141 WB?

It is owned by the State Highway Agency.