US Bridges

I 495 SB over HWY School ST

Fair

Bristol County, Massachusetts · 2 MI E of I 95 · Structure no. M030303RCDOTNBI

Built
1978
47 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
91 ft
1 main span
Daily traffic
48,260
2023 count
Owner
State
State Highway Agency

About this bridge

I 495 SB over HWY School ST is a prestressed concrete stringer/multi-beam or girder carrying I 495 SB over HWY School ST in Bristol County, Massachusetts. It was built in 1978, so it is 47 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 48,260 vehicles a day, roughly 7% of them trucks, projected to reach 62,382 by 2031. The structure is 91 ft (27.7 m) long and 57 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesI 495 SB
CrossesHWY School ST
Location2 MI E of I 95
RouteInterstate 495
CountyBristol County
StateMassachusetts
Coordinates42.01211, -71.23293
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating46.1 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span87 ft (26.5 m)
Deck width57 ft (17.4 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,260 (2023)
Projected traffic62,382 by 2031
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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$4.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 SB over HWY School ST built?

It was built in 1978, making it 47 years old in 2025.

What condition is I 495 SB over HWY School 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 August 2024.

How much traffic does I 495 SB over HWY School ST carry?

About 48,260 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I 495 SB over HWY School ST?

The structure is 91 ft (27.7 m) long with a longest span of 87 ft (26.5 m) and a deck 57 ft wide.

Who owns I 495 SB over HWY School ST?

It is owned by the State Highway Agency.