US Bridges

ST140 SB over HWY County ST

Fair

Plymouth County, Massachusetts · At ST140 · Structure no. L010133NTDOTNBI

Built
1969
56 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
16,448
2022 count
Owner
State
State Highway Agency

About this bridge

ST140 SB over HWY County ST is a steel stringer/multi-beam or girder carrying ST140 SB over HWY County ST in Plymouth County, Massachusetts. It was built in 1969, so it is 56 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 16,448 vehicles a day, roughly 7% of them trucks, projected to reach 48,394 by 2032. The structure is 95 ft (29 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST140 SB
CrossesHWY County ST
LocationAt ST140
RouteState Highway 140
CountyPlymouth County
StateMassachusetts
Coordinates41.80387, -70.96202
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.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating28.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length95 ft (29 m)
Longest span91 ft (27.7 m)
Deck width40 ft (12.1 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,448 (2022)
Projected traffic48,394 by 2032
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST140 SB over HWY County ST built?

It was built in 1969, making it 56 years old in 2025.

What condition is ST140 SB 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 SB over HWY County ST carry?

About 16,448 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is ST140 SB over HWY County ST?

The structure is 95 ft (29 m) long with a longest span of 91 ft (27.7 m) and a deck 40 ft wide.

Who owns ST140 SB over HWY County ST?

It is owned by the State Highway Agency.