US Bridges

I 90 over Water Aqdct at Shaylr LN

Fair

Middlesex County, Massachusetts · At Mm 122.3 · Structure no. W290444Q6DOTNBI

Built
1957
68 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
42 ft
1 main span
Daily traffic
122,017
2022 count
Owner
State
State Highway Agency

About this bridge

I 90 over Water Aqdct at Shaylr LN is a concrete culvert carrying I 90 over Water Aqdct at Shaylr LN 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 122,017 vehicles a day, roughly 7% of them trucks, projected to reach 157,298 by 2033. The structure is 42 ft (12.8 m) long and 106 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 90
CrossesWater Aqdct at Shaylr LN
LocationAt Mm 122.3
RouteInterstate 90
CountyMiddlesex County
StateMassachusetts
Coordinates42.33843, -71.28407
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating96 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span25 ft (7.6 m)
Deck width106 ft (32.3 m)
Roadway width100 ft (30.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122,017 (2022)
Projected traffic157,298 by 2033
Trucks7%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 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$931,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 over Water Aqdct at Shaylr LN built?

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

What condition is I 90 over Water Aqdct at Shaylr LN 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 February 2024.

How much traffic does I 90 over Water Aqdct at Shaylr LN carry?

About 122,017 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is I 90 over Water Aqdct at Shaylr LN?

The structure is 42 ft (12.8 m) long with a longest span of 25 ft (7.6 m) and a deck 106 ft wide.

Who owns I 90 over Water Aqdct at Shaylr LN?

It is owned by the State Highway Agency.