US Bridges

HWY School ST over HWY Parking Lot

Fair

Middlesex County, Massachusetts · 0.40 KM S School & Brdway · Structure no. L150102NDDOT634

Built
1995
30 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
307 ft
5 main spans
Daily traffic
17,845
2019 count
Owner
State
State Highway Agency

About this bridge

HWY School ST over HWY Parking Lot is a steel continuous stringer/multi-beam or girder carrying HWY School ST over HWY Parking Lot in Middlesex County, Massachusetts. It was built in 1995, so it is 30 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 17,845 vehicles a day, roughly 5% of them trucks, projected to reach 27,164 by 2032. The structure is 307 ft (93.6 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHWY School ST
CrossesHWY Parking Lot
Location0.40 KM S School & Brdway
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.64119, -71.32531
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating92.5 US tons
Inventory rating55.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length307 ft (93.6 m)
Longest span70 ft (21.3 m)
Deck width49 ft (14.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,845 (2019)
Projected traffic27,164 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$6.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY School ST over HWY Parking Lot built?

It was built in 1995, making it 30 years old in 2025.

What condition is HWY School ST over HWY Parking Lot 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 September 2023.

How much traffic does HWY School ST over HWY Parking Lot carry?

About 17,845 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is HWY School ST over HWY Parking Lot?

The structure is 307 ft (93.6 m) long with a longest span of 70 ft (21.3 m) and a deck 49 ft wide.

Who owns HWY School ST over HWY Parking Lot?

It is owned by the State Highway Agency.