US Bridges

ST 31 Westmnstr RD over Water Phillips Brook

Fair

Worcester County, Massachusetts · .1 MI W of ST-12 · Structure no. F040031KUDOTNBI

Built
1947
78 years old, rebuilt 2020
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
1 main span
Daily traffic
11,800
2023 count
Owner
State
State Highway Agency

About this bridge

ST 31 Westmnstr RD over Water Phillips Brook is a steel stringer/multi-beam or girder carrying ST 31 Westmnstr RD over Water Phillips Brook in Worcester County, Massachusetts. It was built in 1947 and reconstructed in 2020, so it is 78 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 6 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 11,800 vehicles a day, roughly 2% of them trucks, projected to reach 23,690 by 2032. The structure is 57 ft (17.5 m) long and 54 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST 31 Westmnstr RD
CrossesWater Phillips Brook
Location.1 MI W of ST-12
RouteState Highway 31
CountyWorcester County
StateMassachusetts
Coordinates42.57453, -71.83717
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating85.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length57 ft (17.5 m)
Longest span56 ft (17.1 m)
Deck width54 ft (16.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,800 (2023)
Projected traffic23,690 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 ST 31 Westmnstr RD over Water Phillips Brook built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 2020.

What condition is ST 31 Westmnstr RD over Water Phillips 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 September 2024.

How much traffic does ST 31 Westmnstr RD over Water Phillips Brook carry?

About 11,800 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is ST 31 Westmnstr RD over Water Phillips Brook?

The structure is 57 ft (17.5 m) long with a longest span of 56 ft (17.1 m) and a deck 54 ft wide.

Who owns ST 31 Westmnstr RD over Water Phillips Brook?

It is owned by the State Highway Agency.