US Bridges

ST 30 Pleasant ST over Water Stoney Brook

Good

Middlesex County, Massachusetts · At Southborough T.L. · Structure no. F0702428HDOTNBI

Built
1895
130 years old
Condition
Good
inspected November 2023
Type
Arch - Deck
Masonry
Length
36 ft
2 main spans
Daily traffic
11,137
2022 count
Owner
State
State Highway Agency

About this bridge

ST 30 Pleasant ST over Water Stoney Brook is a masonry arch - deck carrying ST 30 Pleasant ST over Water Stoney Brook in Middlesex County, Massachusetts. It was built in 1895, so it is 130 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,137 vehicles a day, roughly 6% of them trucks, projected to reach 31,586 by 2032. The structure is 36 ft (11 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST 30 Pleasant ST
CrossesWater Stoney Brook
LocationAt Southborough T.L.
RouteState Highway 30
CountyMiddlesex County
StateMassachusetts
Coordinates42.30374, -71.48969
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating109.9 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans2
Design loadUnknown
Structure length36 ft (11 m)
Longest span15 ft (4.6 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,137 (2022)
Projected traffic31,586 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 30 Pleasant ST over Water Stoney Brook built?

It was built in 1895, making it 130 years old in 2025.

What condition is ST 30 Pleasant ST over Water Stoney Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does ST 30 Pleasant ST over Water Stoney Brook carry?

About 11,137 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is ST 30 Pleasant ST over Water Stoney Brook?

The structure is 36 ft (11 m) long with a longest span of 15 ft (4.6 m) and a deck 31 ft wide.

Who owns ST 30 Pleasant ST over Water Stoney Brook?

It is owned by the State Highway Agency.