US Bridges

ST122 N Main ST over Water Mumford River

FairPosted for load

Worcester County, Massachusetts · .1 MI N of Hrtfd Av · Structure no. U020211L9DOTNBI

Built
1952
73 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
11,191
2022 count
Owner
State
State Highway Agency

About this bridge

ST122 N Main ST over Water Mumford River is a steel stringer/multi-beam or girder carrying ST122 N Main ST over Water Mumford River in Worcester County, Massachusetts. It was built in 1952, so it is 73 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. Its operating status is: posted for load restriction.

It carries about 11,191 vehicles a day, roughly 6% of them trucks, projected to reach 19,267 by 2033. The structure is 56 ft (17.1 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST122 N Main ST
CrossesWater Mumford River
Location.1 MI N of Hrtfd Av
RouteState Highway 122
CountyWorcester County
StateMassachusetts
Coordinates42.09224, -71.64314
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating28.7 US tons
Inventory rating17.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length56 ft (17.1 m)
Longest span53 ft (16.2 m)
Deck width53 ft (16.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,191 (2022)
Projected traffic19,267 by 2033
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST122 N Main ST over Water Mumford River built?

It was built in 1952, making it 73 years old in 2025.

What condition is ST122 N Main ST over Water Mumford 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 November 2023.

How much traffic does ST122 N Main ST over Water Mumford River carry?

About 11,191 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is ST122 N Main ST over Water Mumford River?

The structure is 56 ft (17.1 m) long with a longest span of 53 ft (16.2 m) and a deck 53 ft wide.

Who owns ST122 N Main ST over Water Mumford River?

It is owned by the State Highway Agency.