US Bridges

ST146 NB over ST 98 Aldrich ST

Fair

Worcester County, Massachusetts · MM2.6 0.1 MI W of ST146A · Structure no. U020541N0DOTNBI

Built
1984
41 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
29,065
2023 count
Owner
State
State Highway Agency

About this bridge

ST146 NB over ST 98 Aldrich ST is a prestressed concrete stringer/multi-beam or girder carrying ST146 NB over ST 98 Aldrich ST in Worcester County, Massachusetts. It was built in 1984, so it is 41 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 29,065 vehicles a day, roughly 4% of them trucks, projected to reach 28,427 by 2032. The structure is 94 ft (28.5 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesST146 NB
CrossesST 98 Aldrich ST
LocationMM2.6 0.1 MI W of ST146A
RouteState Highway 146
CountyWorcester County
StateMassachusetts
Coordinates42.03903, -71.6228
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating51.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length94 ft (28.5 m)
Longest span87 ft (26.5 m)
Deck width46 ft (14 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,065 (2023)
Projected traffic28,427 by 2032
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST146 NB over ST 98 Aldrich ST built?

It was built in 1984, making it 41 years old in 2025.

What condition is ST146 NB over ST 98 Aldrich 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 January 2025.

How much traffic does ST146 NB over ST 98 Aldrich ST carry?

About 29,065 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is ST146 NB over ST 98 Aldrich ST?

The structure is 94 ft (28.5 m) long with a longest span of 87 ft (26.5 m) and a deck 46 ft wide.

Who owns ST146 NB over ST 98 Aldrich ST?

It is owned by the State Highway Agency.