US Bridges

ST140 W Central ST over I 495

Fair

Norfolk County, Massachusetts · 3 MI S of ST-126 · Structure no. F08026ANWDOTNBI

Built
2006
19 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
234 ft
2 main spans
Daily traffic
98,432
2024 count
Owner
State
State Highway Agency

About this bridge

ST140 W Central ST over I 495 is a steel continuous stringer/multi-beam or girder carrying ST140 W Central ST over I 495 in Norfolk County, Massachusetts. It was built in 2006, so it is 19 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 98,432 vehicles a day, roughly 10% of them trucks, projected to reach 39,482 by 2031. The structure is 234 ft (71.2 m) long and 107 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesST140 W Central ST
CrossesI 495
Location3 MI S of ST-126
RouteState Highway 140
CountyNorfolk County
StateMassachusetts
Coordinates42.09011, -71.42722
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating81.2 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length234 ft (71.2 m)
Longest span116 ft (35.4 m)
Deck width107 ft (32.5 m)
Roadway width92 ft (28 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98,432 (2024)
Projected traffic39,482 by 2031
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST140 W Central ST over I 495 built?

It was built in 2006, making it 19 years old in 2025.

What condition is ST140 W Central ST over I 495 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 2024.

How much traffic does ST140 W Central ST over I 495 carry?

About 98,432 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is ST140 W Central ST over I 495?

The structure is 234 ft (71.2 m) long with a longest span of 116 ft (35.4 m) and a deck 107 ft wide.

Who owns ST140 W Central ST over I 495?

It is owned by the State Highway Agency.