US Bridges

ST 12 Sb/W Bylstn over RR Pwrr/Bmrr

Fair

Worcester County, Massachusetts · .2 Mi.E. of I-190 · Structure no. W44065238DOT634

Built
1936
89 years old, rebuilt 1978
Condition
Fair
inspected October 2022
Type
Girder and Floorbeam System
Steel
Length
130 ft
1 main span
Daily traffic
6,014
2019 count
Owner
State
State Highway Agency

About this bridge

ST 12 Sb/W Bylstn over RR Pwrr/Bmrr is a steel girder and floorbeam system carrying ST 12 Sb/W Bylstn over RR Pwrr/Bmrr in Worcester County, Massachusetts. It was built in 1936 and reconstructed in 1978, so it is 89 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 6,014 vehicles a day, roughly 10% of them trucks, projected to reach 34,745 by 2031. The structure is 130 ft (39.6 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 12 Sb/W Bylstn
CrossesRR Pwrr/Bmrr
Location.2 Mi.E. of I-190
RouteState Highway 12
CountyWorcester County
StateMassachusetts
Coordinates42.3002, -71.80094
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
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 inspectionOctober 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.8 US tons
Inventory rating36 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length130 ft (39.6 m)
Longest span115 ft (35.1 m)
Deck width38 ft (11.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,014 (2019)
Projected traffic34,745 by 2031
Trucks10%
Lanes on structure1
Traffic directionOne-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$4.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 12 Sb/W Bylstn over RR Pwrr/Bmrr built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1978.

What condition is ST 12 Sb/W Bylstn over RR Pwrr/Bmrr 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 October 2022.

How much traffic does ST 12 Sb/W Bylstn over RR Pwrr/Bmrr carry?

About 6,014 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is ST 12 Sb/W Bylstn over RR Pwrr/Bmrr?

The structure is 130 ft (39.6 m) long with a longest span of 115 ft (35.1 m) and a deck 38 ft wide.

Who owns ST 12 Sb/W Bylstn over RR Pwrr/Bmrr?

It is owned by the State Highway Agency.