US Bridges

ST146 over Water Cold Spring Brook

Fair

Worcester County, Massachusetts · 0.4 MI S Boston Rd-Sutton · Structure no. S330151MQDOTNBI

Built
1938
87 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
44,195
2022 count
Owner
State
State Highway Agency

About this bridge

ST146 over Water Cold Spring Brook is a concrete slab carrying ST146 over Water Cold Spring Brook in Worcester County, Massachusetts. It was built in 1938, so it is 87 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 44,195 vehicles a day, roughly 10% of them trucks, projected to reach 47,379 by 2033. The structure is 27 ft (8.2 m) long and 107 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST146
CrossesWater Cold Spring Brook
Location0.4 MI S Boston Rd-Sutton
RouteState Highway 146
CountyWorcester County
StateMassachusetts
Coordinates42.15775, -71.73186
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.4 US tons
Inventory rating31.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length27 ft (8.2 m)
Longest span20 ft (6.1 m)
Deck width107 ft (32.6 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,195 (2022)
Projected traffic47,379 by 2033
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST146 over Water Cold Spring Brook built?

It was built in 1938, making it 87 years old in 2025.

What condition is ST146 over Water Cold Spring 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 March 2024.

How much traffic does ST146 over Water Cold Spring Brook carry?

About 44,195 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is ST146 over Water Cold Spring Brook?

The structure is 27 ft (8.2 m) long with a longest span of 20 ft (6.1 m) and a deck 107 ft wide.

Who owns ST146 over Water Cold Spring Brook?

It is owned by the State Highway Agency.