US Bridges

HWY Oak ST over I 90

Fair

Middlesex County, Massachusetts · I-90 Mm 122 · Structure no. W290434Q5DOTNBI

Built
1957
68 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
206 ft
4 main spans
Daily traffic
3,900
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Oak ST over I 90 is a steel continuous stringer/multi-beam or girder carrying HWY Oak ST over I 90 in Middlesex County, Massachusetts. It was built in 1957, 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 3,900 vehicles a day, roughly 5% of them trucks, projected to reach 4,738 by 2031. The structure is 206 ft (62.8 m) long and 41 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesHWY Oak ST
CrossesI 90
LocationI-90 Mm 122
RouteInterstate 90
CountyMiddlesex County
StateMassachusetts
Coordinates42.33734, -71.28984
Functional classUrban Collector

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 inspectionApril 2024
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 rating57.4 US tons
Inventory rating34.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length206 ft (62.8 m)
Longest span69 ft (20.9 m)
Deck width41 ft (12.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2024)
Projected traffic4,738 by 2031
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$7.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Oak ST over I 90 built?

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

What condition is HWY Oak ST over I 90 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 April 2024.

How much traffic does HWY Oak ST over I 90 carry?

About 3,900 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is HWY Oak ST over I 90?

The structure is 206 ft (62.8 m) long with a longest span of 69 ft (20.9 m) and a deck 41 ft wide.

Who owns HWY Oak ST over I 90?

It is owned by the State Highway Agency.