US Bridges

I 91 SB over Other Nortwottuck Ra TR

Fair

Hampshire County, Massachusetts · Mm 24.8 on I-91 SB · Structure no. N19063109DOTNBI

Built
1965
60 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
17,735
2019 count
Owner
State
State Highway Agency

About this bridge

I 91 SB over Other Nortwottuck Ra TR is a steel stringer/multi-beam or girder carrying I 91 SB over Other Nortwottuck Ra TR in Hampshire 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 17,735 vehicles a day, roughly 9% of them trucks, projected to reach 44,991 by 2031. The structure is 90 ft (27.4 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 91 SB
CrossesOther Nortwottuck Ra TR
LocationMm 24.8 on I-91 SB
RouteInterstate 91
CountyHampshire County
StateMassachusetts
Coordinates42.33438, -72.62333
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.4 US tons
Inventory rating34.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length90 ft (27.4 m)
Longest span85 ft (25.9 m)
Deck width44 ft (13.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,735 (2019)
Projected traffic44,991 by 2031
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesPedestrian / bicycle
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$3.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 SB over Other Nortwottuck Ra TR built?

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

What condition is I 91 SB over Other Nortwottuck Ra TR 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 April 2024.

How much traffic does I 91 SB over Other Nortwottuck Ra TR carry?

About 17,735 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is I 91 SB over Other Nortwottuck Ra TR?

The structure is 90 ft (27.4 m) long with a longest span of 85 ft (25.9 m) and a deck 44 ft wide.

Who owns I 91 SB over Other Nortwottuck Ra TR?

It is owned by the State Highway Agency.