US Bridges

ST 12 Central ST over Water Monoosnoc Brook

Fair

Worcester County, Massachusetts · At Corner of Manning Ave · Structure no. L080051KDDOTNBI

Built
1900
125 years old, rebuilt 1927
Condition
Fair
inspected December 2023
Type
Arch - Deck
Masonry
Length
26 ft
1 main span
Daily traffic
20,557
2019 count
Owner
State
State Highway Agency

About this bridge

ST 12 Central ST over Water Monoosnoc Brook is a masonry arch - deck carrying ST 12 Central ST over Water Monoosnoc Brook in Worcester County, Massachusetts. It was built in 1900 and reconstructed in 1927, so it is 125 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 5 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 20,557 vehicles a day, roughly 5% of them trucks, projected to reach 34,745 by 2032. The structure is 26 ft (7.9 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 12 Central ST
CrossesWater Monoosnoc Brook
LocationAt Corner of Manning Ave
RouteState Highway 12
CountyWorcester County
StateMassachusetts
Coordinates42.52509, -71.75947
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width58 ft (17.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,557 (2019)
Projected traffic34,745 by 2032
Trucks5%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 12 Central ST over Water Monoosnoc Brook built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1927.

What condition is ST 12 Central ST over Water Monoosnoc 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 December 2023.

How much traffic does ST 12 Central ST over Water Monoosnoc Brook carry?

About 20,557 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is ST 12 Central ST over Water Monoosnoc Brook?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 58 ft wide.

Who owns ST 12 Central ST over Water Monoosnoc Brook?

It is owned by the State Highway Agency.