US Bridges

HWY Middlesex ST over Water Stony Brook

Fair

Middlesex County, Massachusetts · @ Stony Brook · Structure no. C0800281MMUNNBI

Built
1850
175 years old, rebuilt 1900
Condition
Fair
inspected March 2024
Type
Arch - Deck
Masonry
Length
27 ft
1 main span
Daily traffic
2,208
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Middlesex ST over Water Stony Brook is a masonry arch - deck carrying HWY Middlesex ST over Water Stony Brook in Middlesex County, Massachusetts. It was built in 1850 and reconstructed in 1900, so it is 175 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 2,208 vehicles a day, roughly 2% of them trucks. The structure is 27 ft (8.2 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesHWY Middlesex ST
CrossesWater Stony Brook
Location@ Stony Brook
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.6375, -71.37719
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.7 m)
Deck width43 ft (13.1 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic2,208 (2019)
Projected traffic—
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Middlesex ST over Water Stony Brook built?

It was built in 1850, making it 175 years old in 2025. It was reconstructed in 1900.

What condition is HWY Middlesex ST over Water Stony Brook 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 2024.

How much traffic does HWY Middlesex ST over Water Stony Brook carry?

About 2,208 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is HWY Middlesex ST over Water Stony Brook?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.7 m) and a deck 43 ft wide.

Who owns HWY Middlesex ST over Water Stony Brook?

It is owned by the Town or Township Highway Agency and maintained by the City or Municipal Highway Agency.