US Bridges

ST146 SB over ST 16 Douglas ST

Fair

Worcester County, Massachusetts · 2.1 Mi.Sth.Of Lacky Dm.Rd · Structure no. U020621N8DOTNBI

Built
1983
42 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
27,775
2024 count
Owner
State
State Highway Agency

About this bridge

ST146 SB over ST 16 Douglas ST is a steel stringer/multi-beam or girder carrying ST146 SB over ST 16 Douglas ST in Worcester County, Massachusetts. It was built in 1983, so it is 42 years old, younger 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 27,775 vehicles a day, roughly 15% of them trucks, projected to reach 30,007 by 2033. The structure is 90 ft (27.4 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST146 SB
CrossesST 16 Douglas ST
Location2.1 Mi.Sth.Of Lacky Dm.Rd
RouteU.S. Route 146
CountyWorcester County
StateMassachusetts
Coordinates42.06691, -71.6664
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.3 US tons
Inventory rating50.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span87 ft (26.5 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,775 (2024)
Projected traffic30,007 by 2033
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$754,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST146 SB over ST 16 Douglas ST built?

It was built in 1983, making it 42 years old in 2025.

What condition is ST146 SB over ST 16 Douglas ST 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 March 2024.

How much traffic does ST146 SB over ST 16 Douglas ST carry?

About 27,775 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is ST146 SB over ST 16 Douglas ST?

The structure is 90 ft (27.4 m) long with a longest span of 87 ft (26.5 m) and a deck 45 ft wide.

Who owns ST146 SB over ST 16 Douglas ST?

It is owned by the State Highway Agency.