US Bridges

I 91 NB over Comb US 5 & Gwrr

Good

Hampshire County, Massachusetts · Mm 22.8 on I-91 · Structure no. N19059BM3DOTNBI

Built
2023
2 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
436 ft
6 main spans
Daily traffic
24,935
2022 count
Owner
State
State Highway Agency

About this bridge

I 91 NB over Comb US 5 & Gwrr is a steel continuous stringer/multi-beam or girder carrying I 91 NB over Comb US 5 & Gwrr in Hampshire County, Massachusetts. It was built in 2023, so it is 2 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 24,935 vehicles a day, roughly 11% of them trucks. The structure is 436 ft (133 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 91 NB
CrossesComb US 5 & Gwrr
LocationMm 22.8 on I-91
RouteInterstate 91
CountyHampshire County
StateMassachusetts
Coordinates42.30791, -72.62292
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length436 ft (133 m)
Longest span85 ft (25.9 m)
Deck width52 ft (15.8 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,935 (2022)
Projected traffic—
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed0.6 mi (1 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 NB over Comb US 5 & Gwrr built?

It was built in 2023, making it 2 years old in 2025.

What condition is I 91 NB over Comb US 5 & Gwrr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does I 91 NB over Comb US 5 & Gwrr carry?

About 24,935 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is I 91 NB over Comb US 5 & Gwrr?

The structure is 436 ft (133 m) long with a longest span of 85 ft (25.9 m) and a deck 52 ft wide.

Who owns I 91 NB over Comb US 5 & Gwrr?

It is owned by the State Highway Agency.