US Bridges

ST140 NB over HWY County ST

FairPosted for load

Plymouth County, Massachusetts · At ST 140 · Structure no. L010093NRDOTNBI

Built
1958
67 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
97 ft
1 main span
Daily traffic
15,388
2023 count
Owner
State
State Highway Agency

About this bridge

ST140 NB over HWY County ST is a steel stringer/multi-beam or girder carrying ST140 NB over HWY County ST in Plymouth County, Massachusetts. It was built in 1958, so it is 67 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 15,388 vehicles a day, roughly 16% of them trucks, projected to reach 48,394 by 2032. The structure is 97 ft (29.6 m) long and 51 ft wide.

Location

Open in Google Maps
CarriesST140 NB
CrossesHWY County ST
LocationAt ST 140
RouteState Highway 140
CountyPlymouth County
StateMassachusetts
Coordinates41.80356, -70.96151
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length97 ft (29.6 m)
Longest span92 ft (28 m)
Deck width51 ft (15.5 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,388 (2023)
Projected traffic48,394 by 2032
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST140 NB over HWY County ST built?

It was built in 1958, making it 67 years old in 2025.

What condition is ST140 NB over HWY County 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 October 2023.

How much traffic does ST140 NB over HWY County ST carry?

About 15,388 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is ST140 NB over HWY County ST?

The structure is 97 ft (29.6 m) long with a longest span of 92 ft (28 m) and a deck 51 ft wide.

Who owns ST140 NB over HWY County ST?

It is owned by the State Highway Agency.