US Bridges

HWY Maple ST over I 495

Poor

Norfolk County, Massachusetts · 1.2 MI South of ST 126 · Structure no. B060222ARDOTNBI

Built
1966
59 years old
Condition
Poor
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
221 ft
2 main spans
Daily traffic
5,261
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Maple ST over I 495 is a steel stringer/multi-beam or girder carrying HWY Maple ST over I 495 in Norfolk County, Massachusetts. It was built in 1966, so it is 59 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,261 vehicles a day, roughly 7% of them trucks, projected to reach 1,848 by 2032. The structure is 221 ft (67.3 m) long and 45 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesHWY Maple ST
CrossesI 495
Location1.2 MI South of ST 126
RouteCity Street 0
CountyNorfolk County
StateMassachusetts
Coordinates42.10374, -71.44862
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 3 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating56.1 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length221 ft (67.3 m)
Longest span107 ft (32.6 m)
Deck width45 ft (13.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,261 (2023)
Projected traffic1,848 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemNo

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$9.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Maple ST over I 495 built?

It was built in 1966, making it 59 years old in 2025.

What condition is HWY Maple ST over I 495 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does HWY Maple ST over I 495 carry?

About 5,261 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is HWY Maple ST over I 495?

The structure is 221 ft (67.3 m) long with a longest span of 107 ft (32.6 m) and a deck 45 ft wide.

Who owns HWY Maple ST over I 495?

It is owned by the State Highway Agency.