US Bridges

ST 12 Spring ST over Water Millers River

Fair

Worcester County, Massachusetts · ST 12 Spring St/Millers R · Structure no. W39012198DOTNBI

Built
1927
98 years old
Condition
Fair
inspected March 2023
Type
Arch - Deck
Concrete
Length
41 ft
1 main span
Daily traffic
16,680
2015 count
Owner
State
State Highway Agency

About this bridge

ST 12 Spring ST over Water Millers River is a concrete arch - deck carrying ST 12 Spring ST over Water Millers River in Worcester County, Massachusetts. It was built in 1927, so it is 98 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 16,680 vehicles a day, roughly 10% of them trucks, projected to reach 32,692 by 2032. The structure is 41 ft (12.6 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 12 Spring ST
CrossesWater Millers River
LocationST 12 Spring St/Millers R
RouteState Highway 12
CountyWorcester County
StateMassachusetts
Coordinates42.68, -72.04691
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
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 2023
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating101.7 US tons
Inventory rating61 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length41 ft (12.6 m)
Longest span41 ft (12.6 m)
Deck width42 ft (12.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,680 (2015)
Projected traffic32,692 by 2032
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$1.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 12 Spring ST over Water Millers River built?

It was built in 1927, making it 98 years old in 2025.

What condition is ST 12 Spring ST over Water Millers River 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 2023.

How much traffic does ST 12 Spring ST over Water Millers River carry?

About 16,680 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is ST 12 Spring ST over Water Millers River?

The structure is 41 ft (12.6 m) long with a longest span of 41 ft (12.6 m) and a deck 42 ft wide.

Who owns ST 12 Spring ST over Water Millers River?

It is owned by the State Highway Agency.