US Bridges

I 90 WB over ST 31 City Depot RD

Fair

Worcester County, Massachusetts · At I-90 Mm 82.6 · Structure no. C060374L6DOTNBI

Built
1957
68 years old, rebuilt 1986
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
200 ft
3 main spans
Daily traffic
48,925
2021 count
Owner
State
State Highway Agency

About this bridge

I 90 WB over ST 31 City Depot RD is a steel continuous stringer/multi-beam or girder carrying I 90 WB over ST 31 City Depot RD in Worcester County, Massachusetts. It was built in 1957 and reconstructed in 1986, so it is 68 years old, older 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 48,925 vehicles a day, roughly 19% of them trucks, projected to reach 75,033 by 2032. The structure is 200 ft (61 m) long and 57 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI 90 WB
CrossesST 31 City Depot RD
LocationAt I-90 Mm 82.6
RouteInterstate 90
CountyWorcester County
StateMassachusetts
Coordinates42.1527, -71.98555
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length200 ft (61 m)
Longest span65 ft (19.8 m)
Deck width57 ft (17.4 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,925 (2021)
Projected traffic75,033 by 2032
Trucks19%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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$4.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 WB over ST 31 City Depot RD built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1986.

What condition is I 90 WB over ST 31 City Depot RD 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 2023.

How much traffic does I 90 WB over ST 31 City Depot RD carry?

About 48,925 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is I 90 WB over ST 31 City Depot RD?

The structure is 200 ft (61 m) long with a longest span of 65 ft (19.8 m) and a deck 57 ft wide.

Who owns I 90 WB over ST 31 City Depot RD?

It is owned by the State Highway Agency.