US Bridges

HWY Armory ST over I 291 /US20

Fair

Hampden County, Massachusetts · Mm 1.5 on I-291 · Structure no. S2406913KDOTNBI

Built
1967
58 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
195 ft
2 main spans
Daily traffic
23,700
2003 count
Owner
State
State Highway Agency

About this bridge

HWY Armory ST over I 291 /US20 is a steel continuous stringer/multi-beam or girder carrying HWY Armory ST over I 291 /US20 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 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 23,700 vehicles a day, roughly 6% of them trucks, projected to reach 37,429 by 2032. The structure is 195 ft (59.3 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHWY Armory ST
CrossesI 291 /US20
LocationMm 1.5 on I-291
RouteCity Street 0
CountyHampden County
StateMassachusetts
Coordinates42.11855, -72.58374
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length195 ft (59.3 m)
Longest span95 ft (29 m)
Deck width45 ft (13.8 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,700 (2003)
Projected traffic37,429 by 2032
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$8.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Armory ST over I 291 /US20 built?

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

What condition is HWY Armory ST over I 291 /US20 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 January 2025.

How much traffic does HWY Armory ST over I 291 /US20 carry?

About 23,700 vehicles per day (2003 count), of which roughly 6% are trucks.

How long is HWY Armory ST over I 291 /US20?

The structure is 195 ft (59.3 m) long with a longest span of 95 ft (29 m) and a deck 45 ft wide.

Who owns HWY Armory ST over I 291 /US20?

It is owned by the State Highway Agency.