US Bridges

I 291 Line K over I 91

Fair

Hampden County, Massachusetts · Bet I-91 SB & Main St. · Structure no. S24083114DOTNBI

Built
1969
56 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,523 ft
18 main spans
Daily traffic
27,000
2019 count
Owner
State
State Highway Agency

About this bridge

I 291 Line K over I 91 is a steel stringer/multi-beam or girder carrying I 291 Line K over I 91 in Hampden County, Massachusetts. It was built in 1969, so it is 56 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 27,000 vehicles a day, roughly 6% of them trucks, projected to reach 138,978 by 2032. The structure is 1,523 ft (464.2 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 291 Line K
CrossesI 91
LocationBet I-91 SB & Main St.
RouteInterstate 291
CountyHampden County
StateMassachusetts
Coordinates42.10749, -72.60211
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionAugust 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 alignment7: Better than present minimum criteria
Operating rating64.8 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans18
Design loadHS 20
Structure length1,523 ft (464.2 m)
Longest span112 ft (34.1 m)
Deck width45 ft (13.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic27,000 (2019)
Projected traffic138,978 by 2032
Trucks6%
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$62 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 291 Line K over I 91 built?

It was built in 1969, making it 56 years old in 2025.

What condition is I 291 Line K over I 91 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 August 2023.

How much traffic does I 291 Line K over I 91 carry?

About 27,000 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is I 291 Line K over I 91?

The structure is 1,523 ft (464.2 m) long with a longest span of 112 ft (34.1 m) and a deck 45 ft wide.

Who owns I 291 Line K over I 91?

It is owned by the State Highway Agency.