US Bridges

I 91 over HWY Arch ST

Fair

Hampden County, Massachusetts · JCT Arch St. · Structure no. S2408810NDOTNBI

Built
1968
57 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
134,428
2023 count
Owner
State
State Highway Agency

About this bridge

I 91 over HWY Arch ST is a steel stringer/multi-beam or girder carrying I 91 over HWY Arch ST in Hampden County, Massachusetts. It was built in 1968, so it is 57 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 134,428 vehicles a day, roughly 9% of them trucks, projected to reach 133,609 by 2032. The structure is 95 ft (28.9 m) long and 142 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 91
CrossesHWY Arch ST
LocationJCT Arch St.
RouteInterstate 91
CountyHampden County
StateMassachusetts
Coordinates42.11366, -72.60772
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating30.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length95 ft (28.9 m)
Longest span90 ft (27.5 m)
Deck width142 ft (43.2 m)
Roadway width125 ft (38 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic134,428 (2023)
Projected traffic133,609 by 2032
Trucks9%
Lanes on structure10
Traffic directionTwo-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$12.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 over HWY Arch ST built?

It was built in 1968, making it 57 years old in 2025.

What condition is I 91 over HWY Arch ST 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 I 91 over HWY Arch ST carry?

About 134,428 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I 91 over HWY Arch ST?

The structure is 95 ft (28.9 m) long with a longest span of 90 ft (27.5 m) and a deck 142 ft wide.

Who owns I 91 over HWY Arch ST?

It is owned by the State Highway Agency.