US Bridges

HWY Bridge ST over Water Blackstone River

PoorPosted for load

Worcester County, Massachusetts · .2 Mi. S. of ST-122 · Structure no. B130011EAMUNNBI

Built
1955
70 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
174 ft
2 main spans
Daily traffic
100
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Bridge ST over Water Blackstone River is a steel stringer/multi-beam or girder carrying HWY Bridge ST over Water Blackstone River in Worcester County, Massachusetts. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 1% of them trucks, projected to reach 4,738 by 2032. The structure is 174 ft (53 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Bridge ST
CrossesWater Blackstone River
Location.2 Mi. S. of ST-122
RouteCity Street 0
Coordinates42.01677, -71.53849
Functional classUrban Collector

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating75.9 US tons
Inventory rating45.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length174 ft (53 m)
Longest span84 ft (25.6 m)
Deck width35 ft (10.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic4,738 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$5.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Bridge ST over Water Blackstone River built?

It was built in 1955, making it 70 years old in 2025.

What condition is HWY Bridge ST over Water Blackstone River 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 July 2023.

How much traffic does HWY Bridge ST over Water Blackstone River carry?

About 100 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is HWY Bridge ST over Water Blackstone River?

The structure is 174 ft (53 m) long with a longest span of 84 ft (25.6 m) and a deck 35 ft wide.

Who owns HWY Bridge ST over Water Blackstone River?

It is owned by the Town or Township Highway Agency.