US Bridges

I 495 over Water Fall Brook

Fair

Plymouth County, Massachusetts · 1.8 M S of RTE 105 · Structure no. M18044461DOTNBI

Built
1957
68 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
33 ft
1 main span
Daily traffic
44,431
2022 count
Owner
State
State Highway Agency

About this bridge

I 495 over Water Fall Brook is a concrete culvert carrying I 495 over Water Fall Brook in Plymouth County, Massachusetts. It was built in 1957, so it is 68 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 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 44,431 vehicles a day, roughly 3% of them trucks, projected to reach 108,024 by 2032. The structure is 33 ft (10.2 m) long and 128 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI 495
CrossesWater Fall Brook
Location1.8 M S of RTE 105
RouteInterstate 495
CountyPlymouth County
StateMassachusetts
Coordinates41.86921, -70.89044
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.5 US tons
Inventory rating32.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length33 ft (10.2 m)
Longest span28 ft (8.5 m)
Deck width128 ft (39.1 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,431 (2022)
Projected traffic108,024 by 2032
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$2.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 495 over Water Fall Brook built?

It was built in 1957, making it 68 years old in 2025.

What condition is I 495 over Water Fall Brook 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 June 2023.

How much traffic does I 495 over Water Fall Brook carry?

About 44,431 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is I 495 over Water Fall Brook?

The structure is 33 ft (10.2 m) long with a longest span of 28 ft (8.5 m) and a deck 128 ft wide.

Who owns I 495 over Water Fall Brook?

It is owned by the State Highway Agency.