US Bridges

ST146 SB over HWY Smith RD

Fair

Worcester County, Massachusetts · .5MI. S. of Cen. Tpk. · Structure no. S330221MNDOTNBI

Built
1982
43 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
83 ft
1 main span
Daily traffic
22,016
2022 count
Owner
State
State Highway Agency

About this bridge

ST146 SB over HWY Smith RD is a prestressed concrete stringer/multi-beam or girder carrying ST146 SB over HWY Smith RD in Worcester County, Massachusetts. It was built in 1982, so it is 43 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 5 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 22,016 vehicles a day, roughly 5% of them trucks, projected to reach 59,540 by 2032. The structure is 83 ft (25.3 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesST146 SB
CrossesHWY Smith RD
Location.5MI. S. of Cen. Tpk.
RouteState Highway 146
CountyWorcester County
StateMassachusetts
Coordinates42.14472, -71.71782
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.8 US tons
Inventory rating45.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span79 ft (24.1 m)
Deck width42 ft (12.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,016 (2022)
Projected traffic59,540 by 2032
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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$3.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST146 SB over HWY Smith RD built?

It was built in 1982, making it 43 years old in 2025.

What condition is ST146 SB over HWY Smith RD 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 August 2023.

How much traffic does ST146 SB over HWY Smith RD carry?

About 22,016 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is ST146 SB over HWY Smith RD?

The structure is 83 ft (25.3 m) long with a longest span of 79 ft (24.1 m) and a deck 42 ft wide.

Who owns ST146 SB over HWY Smith RD?

It is owned by the State Highway Agency.