US Bridges

HWY School ST over RR Mbta/Bmrr

Fair

Middlesex County, Massachusetts · 1.3 KM SW of JCT SR28&38 · Structure no. S170083G5DOT634

Built
1898
127 years old, rebuilt 2023
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
2,100
2023 count
Owner
State
State Highway Agency

About this bridge

HWY School ST over RR Mbta/Bmrr is a prestressed concrete box beam or girders - multiple carrying HWY School ST over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1898 and reconstructed in 2023, so it is 127 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 5 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 2,100 vehicles a day, roughly 6% of them trucks, projected to reach 14,056 by 2033. The structure is 99 ft (30.2 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY School ST
CrossesRR Mbta/Bmrr
Location1.3 KM SW of JCT SR28&38
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.38844, -71.09764
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.9 US tons
Inventory rating63.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+1 approach)
Design loadHS 20
Structure length99 ft (30.2 m)
Longest span75 ft (22.9 m)
Deck width46 ft (14 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2023)
Projected traffic14,056 by 2033
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY School ST over RR Mbta/Bmrr built?

It was built in 1898, making it 127 years old in 2025. It was reconstructed in 2023.

What condition is HWY School ST over RR Mbta/Bmrr 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 HWY School ST over RR Mbta/Bmrr carry?

About 2,100 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is HWY School ST over RR Mbta/Bmrr?

The structure is 99 ft (30.2 m) long with a longest span of 75 ft (22.9 m) and a deck 46 ft wide.

Who owns HWY School ST over RR Mbta/Bmrr?

It is owned by the State Highway Agency.