US Bridges

ST146 NB over Water Mumford River

Good

Worcester County, Massachusetts · Mm 7.2 · Structure no. U02041C2RDOTNBI

Built
2022
3 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
16,652
2023 count
Owner
State
State Highway Agency

About this bridge

ST146 NB over Water Mumford River is a prestressed concrete stringer/multi-beam or girder carrying ST146 NB over Water Mumford River in Worcester County, Massachusetts. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 16,652 vehicles a day, roughly 4% of them trucks. The structure is 101 ft (30.7 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesST146 NB
CrossesWater Mumford River
LocationMm 7.2
RouteState Highway 146
CountyWorcester County
StateMassachusetts
Coordinates42.083, -71.68968
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length101 ft (30.7 m)
Longest span101 ft (30.7 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,652 (2023)
Projected traffic—
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was ST146 NB over Water Mumford River built?

It was built in 2022, making it 3 years old in 2025.

What condition is ST146 NB over Water Mumford 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 August 2024.

How much traffic does ST146 NB over Water Mumford River carry?

About 16,652 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is ST146 NB over Water Mumford River?

The structure is 101 ft (30.7 m) long with a longest span of 101 ft (30.7 m) and a deck 44 ft wide.

Who owns ST146 NB over Water Mumford River?

It is owned by the State Highway Agency.