US Bridges

ST 31 N Spencer RD over Water Seven Mile River

FairPosted for load

Worcester County, Massachusetts · 1MI. N. of ST-9 · Structure no. S230021XWDOTNBI

Built
1952
73 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
5,299
2022 count
Owner
State
State Highway Agency

About this bridge

ST 31 N Spencer RD over Water Seven Mile River is a steel stringer/multi-beam or girder carrying ST 31 N Spencer RD over Water Seven Mile 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 5 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 5,299 vehicles a day, roughly 8% of them trucks, projected to reach 5,054 by 2031. The structure is 53 ft (16.3 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesST 31 N Spencer RD
CrossesWater Seven Mile River
Location1MI. N. of ST-9
RouteState Highway 31
CountyWorcester County
StateMassachusetts
Coordinates42.25584, -72.00415
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.1 US tons
Inventory rating21.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length53 ft (16.3 m)
Longest span49 ft (14.9 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,299 (2022)
Projected traffic5,054 by 2031
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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$1.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 31 N Spencer RD over Water Seven Mile River built?

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

What condition is ST 31 N Spencer RD over Water Seven Mile 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 April 2024.

How much traffic does ST 31 N Spencer RD over Water Seven Mile River carry?

About 5,299 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is ST 31 N Spencer RD over Water Seven Mile River?

The structure is 53 ft (16.3 m) long with a longest span of 49 ft (14.9 m) and a deck 36 ft wide.

Who owns ST 31 N Spencer RD over Water Seven Mile River?

It is owned by the State Highway Agency.