US Bridges

ST146 over RR Pwrr

Fair

Worcester County, Massachusetts · .3 Miles South of ST 122A · Structure no. M220191MGDOTNBI

Built
1981
44 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
169 ft
1 main span
Daily traffic
40,001
2021 count
Owner
State
State Highway Agency

About this bridge

ST146 over RR Pwrr is a steel stringer/multi-beam or girder carrying ST146 over RR Pwrr in Worcester County, Massachusetts. It was built in 1981, so it is 44 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 40,001 vehicles a day, roughly 15% of them trucks, projected to reach 37,114 by 2032. The structure is 169 ft (51.5 m) long and 140 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST146
CrossesRR Pwrr
Location.3 Miles South of ST 122A
RouteState Highway 146
CountyWorcester County
StateMassachusetts
Coordinates42.19912, -71.77461
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length169 ft (51.5 m)
Longest span153 ft (46.6 m)
Deck width140 ft (42.7 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,001 (2021)
Projected traffic37,114 by 2032
Trucks15%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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$21.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST146 over RR Pwrr built?

It was built in 1981, making it 44 years old in 2025.

What condition is ST146 over RR Pwrr 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 January 2025.

How much traffic does ST146 over RR Pwrr carry?

About 40,001 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is ST146 over RR Pwrr?

The structure is 169 ft (51.5 m) long with a longest span of 153 ft (46.6 m) and a deck 140 ft wide.

Who owns ST146 over RR Pwrr?

It is owned by the State Highway Agency.