US Bridges

I 91 SB over HWY Scott Tower RD

Fair

Hampden County, Massachusetts · Mm 14.5 on I-91 SB · Structure no. H210510YGDOTNBI

Built
1965
60 years old, rebuilt 1986
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
165 ft
3 main spans
Daily traffic
51,336
2017 count
Owner
State
State Highway Agency

About this bridge

I 91 SB over HWY Scott Tower RD is a steel stringer/multi-beam or girder carrying I 91 SB over HWY Scott Tower RD 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 51,336 vehicles a day, roughly 5% of them trucks, projected to reach 100,759 by 2032. The structure is 165 ft (50.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 91 SB
CrossesHWY Scott Tower RD
LocationMm 14.5 on I-91 SB
RouteInterstate 91
CountyHampden County
StateMassachusetts
Coordinates42.20521, -72.63886
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length165 ft (50.2 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,336 (2017)
Projected traffic100,759 by 2032
Trucks5%
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$6.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 SB over HWY Scott Tower RD built?

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

What condition is I 91 SB over HWY Scott Tower 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 May 2023.

How much traffic does I 91 SB over HWY Scott Tower RD carry?

About 51,336 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is I 91 SB over HWY Scott Tower RD?

The structure is 165 ft (50.2 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns I 91 SB over HWY Scott Tower RD?

It is owned by the State Highway Agency.