US Bridges

ST146 NB over HWY Main ST

Fair

Worcester County, Massachusetts · 100 Ft N. of Sutton Tl · Structure no. N210141MJDOTNBI

Built
1950
75 years old, rebuilt 2006
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
118 ft
3 main spans
Daily traffic
18,954
2021 count
Owner
State
State Highway Agency

About this bridge

ST146 NB over HWY Main ST is a steel continuous stringer/multi-beam or girder carrying ST146 NB over HWY Main ST in Worcester County, Massachusetts. It was built in 1950 and reconstructed in 2006, so it is 75 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.

It carries about 18,954 vehicles a day, roughly 7% of them trucks, projected to reach 19,267 by 2032. The structure is 118 ft (36 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST146 NB
CrossesHWY Main ST
Location100 Ft N. of Sutton Tl
RouteState Highway 146
CountyWorcester County
StateMassachusetts
Coordinates42.10159, -71.70387
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 alignment8: Equal to present desirable criteria
Operating rating91.2 US tons
Inventory rating54.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length118 ft (36 m)
Longest span54 ft (16.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,954 (2021)
Projected traffic19,267 by 2032
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST146 NB over HWY Main ST built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2006.

What condition is ST146 NB over HWY Main 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 April 2023.

How much traffic does ST146 NB over HWY Main ST carry?

About 18,954 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is ST146 NB over HWY Main ST?

The structure is 118 ft (36 m) long with a longest span of 54 ft (16.5 m) and a deck 47 ft wide.

Who owns ST146 NB over HWY Main ST?

It is owned by the State Highway Agency.