US Bridges

HWY Ramp L NB on over ST 3 NB

Fair

Norfolk County, Massachusetts · .16 KM SW of Ramp F · Structure no. B2105934UDOTNBI

Built
1981
44 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
146 ft
1 main span
Daily traffic
15,076
2022 count
Owner
State
State Highway Agency

About this bridge

HWY Ramp L NB on over ST 3 NB is a steel stringer/multi-beam or girder carrying HWY Ramp L NB on over ST 3 NB in Norfolk County, Massachusetts. It was built in 1981, so it is 44 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 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 15,076 vehicles a day, roughly 5% of them trucks, projected to reach 57,171 by 2032. The structure is 146 ft (44.5 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHWY Ramp L NB on
CrossesST 3 NB
Location.16 KM SW of Ramp F
CountyNorfolk County
StateMassachusetts
Coordinates42.22776, -71.01736
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.2 US tons
Inventory rating43.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span143 ft (43.6 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,076 (2022)
Projected traffic57,171 by 2032
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Ramp L NB on over ST 3 NB built?

It was built in 1981, making it 44 years old in 2025.

What condition is HWY Ramp L NB on over ST 3 NB 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 July 2023.

How much traffic does HWY Ramp L NB on over ST 3 NB carry?

About 15,076 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is HWY Ramp L NB on over ST 3 NB?

The structure is 146 ft (44.5 m) long with a longest span of 143 ft (43.6 m) and a deck 31 ft wide.

Who owns HWY Ramp L NB on over ST 3 NB?

It is owned by the State Highway Agency.