US Bridges

ST 12 Nb/W Bylstn over RR Pwrr/Bmrr

Poor

Worcester County, Massachusetts · .2 MI E of I-190 · Structure no. W44065237DOT634

Built
1936
89 years old, rebuilt 1978
Condition
Poor
inspected October 2022
Type
Girder and Floorbeam System
Steel
Length
130 ft
1 main span
Daily traffic
7,028
2019 count
Owner
State
State Highway Agency

About this bridge

ST 12 Nb/W Bylstn over RR Pwrr/Bmrr is a steel girder and floorbeam system carrying ST 12 Nb/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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 7,028 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 37 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesST 12 Nb/W Bylstn
CrossesRR Pwrr/Bmrr
Location.2 MI E of I-190
RouteState Highway 12
Coordinates42.3, -71.80093
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2022
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be 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

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length130 ft (39.6 m)
Longest span115 ft (35.1 m)
Deck width37 ft (11.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,028 (2019)
Projected traffic34,745 by 2031
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 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$4.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 12 Nb/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 Nb/W Bylstn over RR Pwrr/Bmrr in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2022.

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

About 7,028 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is ST 12 Nb/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 37 ft wide.

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

It is owned by the State Highway Agency.