US Bridges

I 91 NB over HWY Severance ST

Fair

Franklin County, Massachusetts · Mm 47.6 on I-91 NB · Structure no. G120430XWDOTNBI

Built
1961
64 years old, rebuilt 1986
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
3 main spans
Daily traffic
9,515
2018 count
Owner
State
State Highway Agency

About this bridge

I 91 NB over HWY Severance ST is a steel stringer/multi-beam or girder carrying I 91 NB over HWY Severance ST in Franklin County, Massachusetts. It was built in 1961 and reconstructed in 1986, so it is 64 years old, older 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 9,515 vehicles a day, roughly 8% of them trucks, projected to reach 26,881 by 2032. The structure is 105 ft (32.1 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 91 NB
CrossesHWY Severance ST
LocationMm 47.6 on I-91 NB
RouteInterstate 91
CountyFranklin County
StateMassachusetts
Coordinates42.6391, -72.57252
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length105 ft (32.1 m)
Longest span42 ft (12.8 m)
Deck width45 ft (13.6 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,515 (2018)
Projected traffic26,881 by 2032
Trucks8%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$155,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 NB over HWY Severance ST built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1986.

What condition is I 91 NB over HWY Severance 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 December 2023.

How much traffic does I 91 NB over HWY Severance ST carry?

About 9,515 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is I 91 NB over HWY Severance ST?

The structure is 105 ft (32.1 m) long with a longest span of 42 ft (12.8 m) and a deck 45 ft wide.

Who owns I 91 NB over HWY Severance ST?

It is owned by the State Highway Agency.