US Bridges

ST 12 Sobrdge ST over RR Pwrr

Fair

Worcester County, Massachusetts · .1MI. N. of Auburn St. · Structure no. A1700421EDOT634

Built
1934
91 years old, rebuilt 1983
Condition
Fair
inspected May 2022
Type
Girder and Floorbeam System
Steel
Length
129 ft
1 main span
Daily traffic
10,298
2019 count
Owner
State
State Highway Agency

About this bridge

ST 12 Sobrdge ST over RR Pwrr is a steel girder and floorbeam system carrying ST 12 Sobrdge ST over RR Pwrr in Worcester County, Massachusetts. It was built in 1934 and reconstructed in 1983, so it is 91 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 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 10,298 vehicles a day, roughly 11% of them trucks, projected to reach 15,793 by 2031. The structure is 129 ft (39.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 12 Sobrdge ST
CrossesRR Pwrr
Location.1MI. N. of Auburn St.
RouteState Highway 12
CountyWorcester County
StateMassachusetts
Coordinates42.20826, -71.8313
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
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 inspectionMay 2022
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.1 US tons
Inventory rating58.5 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length129 ft (39.3 m)
Longest span120 ft (36.5 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,298 (2019)
Projected traffic15,793 by 2031
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 12 Sobrdge ST over RR Pwrr built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1983.

What condition is ST 12 Sobrdge ST 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 May 2022.

How much traffic does ST 12 Sobrdge ST over RR Pwrr carry?

About 10,298 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is ST 12 Sobrdge ST over RR Pwrr?

The structure is 129 ft (39.3 m) long with a longest span of 120 ft (36.5 m) and a deck 44 ft wide.

Who owns ST 12 Sobrdge ST over RR Pwrr?

It is owned by the State Highway Agency.