US Bridges

HWY Stony Brk RD over Water Stony Brook

Fair

Middlesex County, Massachusetts · .3 Mi.N. of Lowell Rd. · Structure no. W2600226DMUNNBI

Built
1880
145 years old
Condition
Fair
inspected February 2024
Type
Arch - Deck
Masonry
Length
40 ft
2 main spans
Daily traffic
600
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Stony Brk RD over Water Stony Brook is a masonry arch - deck carrying HWY Stony Brk RD over Water Stony Brook in Middlesex County, Massachusetts. It was built in 1880, so it is 145 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 600 vehicles a day, roughly 1% of them trucks, projected to reach 948 by 2033. The structure is 40 ft (12.2 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Stony Brk RD
CrossesWater Stony Brook
Location.3 Mi.N. of Lowell Rd.
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.6027, -71.41991
Functional classUrban Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.3 US tons
Inventory rating30.2 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans2
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span15 ft (4.6 m)
Deck width18 ft (5.5 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2016)
Projected traffic948 by 2033
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Stony Brk RD over Water Stony Brook built?

It was built in 1880, making it 145 years old in 2025.

What condition is HWY Stony Brk RD 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 February 2024.

How much traffic does HWY Stony Brk RD over Water Stony Brook carry?

About 600 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is HWY Stony Brk RD over Water Stony Brook?

The structure is 40 ft (12.2 m) long with a longest span of 15 ft (4.6 m) and a deck 18 ft wide.

Who owns HWY Stony Brk RD over Water Stony Brook?

It is owned by the Town or Township Highway Agency.