US Bridges

I 91 SB over US 5 /ST10/BRNRDSTN RD

Fair

Franklin County, Massachusetts · Mm 48.4 on I-91 SB · Structure no. G120420Y0DOTNBI

Built
1965
60 years old, rebuilt 1986
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
141 ft
3 main spans
Daily traffic
10,459
2023 count
Owner
State
State Highway Agency

About this bridge

I 91 SB over US 5 /ST10/BRNRDSTN RD is a steel stringer/multi-beam or girder carrying I 91 SB over US 5 /ST10/BRNRDSTN RD in Franklin County, Massachusetts. It was built in 1965 and reconstructed in 1986, so it is 60 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 10,459 vehicles a day, roughly 8% of them trucks, projected to reach 14,135 by 2031. The structure is 141 ft (43.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 91 SB
CrossesUS 5 /ST10/BRNRDSTN RD
LocationMm 48.4 on I-91 SB
RouteInterstate 91
CountyFranklin County
StateMassachusetts
Coordinates42.64826, -72.56271
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length141 ft (43.1 m)
Longest span66 ft (20.1 m)
Deck width45 ft (13.6 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,459 (2023)
Projected traffic14,135 by 2031
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 91 SB over US 5 /ST10/BRNRDSTN RD built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1986.

What condition is I 91 SB over US 5 /ST10/BRNRDSTN RD 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 October 2024.

How much traffic does I 91 SB over US 5 /ST10/BRNRDSTN RD carry?

About 10,459 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is I 91 SB over US 5 /ST10/BRNRDSTN RD?

The structure is 141 ft (43.1 m) long with a longest span of 66 ft (20.1 m) and a deck 45 ft wide.

Who owns I 91 SB over US 5 /ST10/BRNRDSTN RD?

It is owned by the State Highway Agency.