US Bridges

ST 9 Belmont ST W over Water Lake Quinsigamond

Good

Worcester County, Massachusetts · 100 F.T. E. of Lake Ave. · Structure no. S14001BL6DOTNBI

Built
2015
10 years old
Condition
Good
inspected April 2024
Type
Arch - Deck
Steel Continuous
Length
870 ft
Daily traffic
27,700
2016 count
Owner
State
State Highway Agency

About this bridge

ST 9 Belmont ST W over Water Lake Quinsigamond is a steel continuous arch - deck carrying ST 9 Belmont ST W over Water Lake Quinsigamond in Worcester County, Massachusetts. It was built in 2015, so it is 10 years old, younger 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 27,700 vehicles a day, roughly 1% of them trucks. The structure is 870 ft (265.1 m) long and 63 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST 9 Belmont ST W
CrossesWater Lake Quinsigamond
Location100 F.T. E. of Lake Ave.
RouteState Highway 9
CountyWorcester County
StateMassachusetts
Coordinates42.27429, -71.75515
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating42.9 US tons

Structure

Structure typeArch - Deck
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans0
Design loadHL 93
Structure length870 ft (265.1 m)
Longest span240 ft (73.2 m)
Deck width63 ft (19.2 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,700 (2016)
Projected traffic—
Trucks1%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$46.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 9 Belmont ST W over Water Lake Quinsigamond built?

It was built in 2015, making it 10 years old in 2025.

What condition is ST 9 Belmont ST W over Water Lake Quinsigamond 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 April 2024.

How much traffic does ST 9 Belmont ST W over Water Lake Quinsigamond carry?

About 27,700 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is ST 9 Belmont ST W over Water Lake Quinsigamond?

The structure is 870 ft (265.1 m) long with a longest span of 240 ft (73.2 m) and a deck 63 ft wide.

Who owns ST 9 Belmont ST W over Water Lake Quinsigamond?

It is owned by the State Highway Agency.