US Bridges

ST 12 Webster ST over Water Middle River

Good

Worcester County, Massachusetts · 300 Ft. West of Mill St. · Structure no. W44010BB2DOTNBI

Built
2013
12 years old
Condition
Good
inspected May 2024
Type
Slab
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
10,908
2022 count
Owner
State
State Highway Agency

About this bridge

ST 12 Webster ST over Water Middle River is a prestressed concrete slab carrying ST 12 Webster ST over Water Middle River in Worcester County, Massachusetts. It was built in 2013, so it is 12 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 10,908 vehicles a day, roughly 6% of them trucks. The structure is 64 ft (19.5 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesST 12 Webster ST
CrossesWater Middle River
Location300 Ft. West of Mill St.
RouteState Highway 12
Coordinates42.24369, -71.83286
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length64 ft (19.5 m)
Longest span56 ft (17 m)
Deck width49 ft (14.9 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,908 (2022)
Projected traffic—
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 12 Webster ST over Water Middle River built?

It was built in 2013, making it 12 years old in 2025.

What condition is ST 12 Webster ST over Water Middle River 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 May 2024.

How much traffic does ST 12 Webster ST over Water Middle River carry?

About 10,908 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is ST 12 Webster ST over Water Middle River?

The structure is 64 ft (19.5 m) long with a longest span of 56 ft (17 m) and a deck 49 ft wide.

Who owns ST 12 Webster ST over Water Middle River?

It is owned by the State Highway Agency.