US Bridges

I 90 EB over ST146

Good

Worcester County, Massachusetts · MM94 0.3 MI S of US-20 · Structure no. M220344LXDOTNBI

Built
1997
28 years old
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
312 ft
2 main spans
Daily traffic
34,144
2025 count
Owner
State
State Highway Agency

About this bridge

I 90 EB over ST146 is a steel continuous stringer/multi-beam or girder carrying I 90 EB over ST146 in Worcester County, Massachusetts. It was built in 1997, so it is 28 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 34,144 vehicles a day, roughly 14% of them trucks, projected to reach 90,085 by 2032. The structure is 312 ft (95.1 m) long and 81 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesI 90 EB
CrossesST146
LocationMM94 0.3 MI S of US-20
RouteInterstate 90
CountyWorcester County
StateMassachusetts
Coordinates42.21001, -71.78128
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length312 ft (95.1 m)
Longest span156 ft (47.5 m)
Deck width81 ft (24.6 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,144 (2025)
Projected traffic90,085 by 2032
Trucks14%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$5.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 EB over ST146 built?

It was built in 1997, making it 28 years old in 2025.

What condition is I 90 EB over ST146 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does I 90 EB over ST146 carry?

About 34,144 vehicles per day (2025 count), of which roughly 14% are trucks.

How long is I 90 EB over ST146?

The structure is 312 ft (95.1 m) long with a longest span of 156 ft (47.5 m) and a deck 81 ft wide.

Who owns I 90 EB over ST146?

It is owned by the State Highway Agency.