US Bridges

I 291 Conn B & C over HWY Dwight ST

Poor

Hampden County, Massachusetts · .1 M E JCT Main St. · Structure no. S24063119DOTNBI

Built
1967
58 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
102 ft
1 main span
Daily traffic
78,178
2017 count
Owner
State
State Highway Agency

About this bridge

I 291 Conn B & C over HWY Dwight ST is a steel stringer/multi-beam or girder carrying I 291 Conn B & C over HWY Dwight ST in Hampden County, Massachusetts. It was built in 1967, so it is 58 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 78,178 vehicles a day, roughly 12% of them trucks, projected to reach 138,584 by 2031. The structure is 102 ft (31.2 m) long and 90 ft wide.

Location

Open in Google Maps
CarriesI 291 Conn B & C
CrossesHWY Dwight ST
Location.1 M E JCT Main St.
RouteInterstate 291
CountyHampden County
StateMassachusetts
Coordinates42.10988, -72.59686
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating38.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length102 ft (31.2 m)
Longest span99 ft (30.2 m)
Deck width90 ft (27.5 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78,178 (2017)
Projected traffic138,584 by 2031
Trucks12%
Lanes on structure4
Traffic directionTwo-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$8.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 291 Conn B & C over HWY Dwight ST built?

It was built in 1967, making it 58 years old in 2025.

What condition is I 291 Conn B & C over HWY Dwight ST in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does I 291 Conn B & C over HWY Dwight ST carry?

About 78,178 vehicles per day (2017 count), of which roughly 12% are trucks.

How long is I 291 Conn B & C over HWY Dwight ST?

The structure is 102 ft (31.2 m) long with a longest span of 99 ft (30.2 m) and a deck 90 ft wide.

Who owns I 291 Conn B & C over HWY Dwight ST?

It is owned by the State Highway Agency.