US Bridges

ST122 Main ST over Comb Blckstn Cnl & Pwrr

Fair

Worcester County, Massachusetts · At Corner of Butler St. · Structure no. B1300223EDOT634

Built
1947
78 years old, rebuilt 2009
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
188 ft
2 main spans
Daily traffic
3,455
2016 count
Owner
State
State Highway Agency

About this bridge

ST122 Main ST over Comb Blckstn Cnl & Pwrr is a steel continuous stringer/multi-beam or girder carrying ST122 Main ST over Comb Blckstn Cnl & Pwrr in Worcester County, Massachusetts. It was built in 1947 and reconstructed in 2009, so it is 78 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 3,455 vehicles a day, roughly 5% of them trucks, projected to reach 13,424 by 2032. The structure is 188 ft (57.3 m) long and 43 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesST122 Main ST
CrossesComb Blckstn Cnl & Pwrr
LocationAt Corner of Butler St.
RouteState Highway 122
CountyWorcester County
StateMassachusetts
Coordinates42.0169, -71.54548
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length188 ft (57.3 m)
Longest span90 ft (27.4 m)
Deck width43 ft (13.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,455 (2016)
Projected traffic13,424 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$5.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST122 Main ST over Comb Blckstn Cnl & Pwrr built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 2009.

What condition is ST122 Main ST over Comb Blckstn Cnl & 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 February 2025.

How much traffic does ST122 Main ST over Comb Blckstn Cnl & Pwrr carry?

About 3,455 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is ST122 Main ST over Comb Blckstn Cnl & Pwrr?

The structure is 188 ft (57.3 m) long with a longest span of 90 ft (27.4 m) and a deck 43 ft wide.

Who owns ST122 Main ST over Comb Blckstn Cnl & Pwrr?

It is owned by the State Highway Agency.