US Bridges

HWY Liberty ST over RR MBTA

Fair

Norfolk County, Massachusetts · 0.16 KM N. of Grove ST · Structure no. B2102036WDOT634

Built
1984
41 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
74 ft
1 main span
Daily traffic
17,300
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Liberty ST over RR MBTA is a steel stringer/multi-beam or girder carrying HWY Liberty ST over RR MBTA in Norfolk County, Massachusetts. It was built in 1984, so it is 41 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 17,300 vehicles a day, roughly 1% of them trucks, projected to reach 23,690 by 2032. The structure is 74 ft (22.7 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Liberty ST
CrossesRR MBTA
Location0.16 KM N. of Grove ST
RouteCity Street 0
CountyNorfolk County
StateMassachusetts
Coordinates42.19123, -70.98577
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75.9 US tons
Inventory rating45.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length74 ft (22.7 m)
Longest span68 ft (20.8 m)
Deck width57 ft (17.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,300 (2023)
Projected traffic23,690 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$776,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Liberty ST over RR MBTA built?

It was built in 1984, making it 41 years old in 2025.

What condition is HWY Liberty ST over RR MBTA 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 May 2023.

How much traffic does HWY Liberty ST over RR MBTA carry?

About 17,300 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is HWY Liberty ST over RR MBTA?

The structure is 74 ft (22.7 m) long with a longest span of 68 ft (20.8 m) and a deck 57 ft wide.

Who owns HWY Liberty ST over RR MBTA?

It is owned by the State Highway Agency.