US Bridges

ST 3 over Water Monatiquot River

Fair

Norfolk County, Massachusetts · .3 MI SE of Union ST · Structure no. B2103534JDOTNBI

Built
1957
68 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
54 ft
2 main spans
Daily traffic
236,250
2023 count
Owner
State
State Highway Agency

About this bridge

ST 3 over Water Monatiquot River is a concrete continuous culvert carrying ST 3 over Water Monatiquot River in Norfolk County, Massachusetts. It was built in 1957, so it is 68 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 236,250 vehicles a day, roughly 5% of them trucks, projected to reach 224,576 by 2032. The structure is 54 ft (16.5 m) long and 174 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST 3
CrossesWater Monatiquot River
Location.3 MI SE of Union ST
RouteState Highway 3
CountyNorfolk County
StateMassachusetts
Coordinates42.20692, -70.99439
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.4 US tons
Inventory rating48.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span25 ft (7.6 m)
Deck width174 ft (53.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236,250 (2023)
Projected traffic224,576 by 2032
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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$7.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 3 over Water Monatiquot River built?

It was built in 1957, making it 68 years old in 2025.

What condition is ST 3 over Water Monatiquot 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 September 2023.

How much traffic does ST 3 over Water Monatiquot River carry?

About 236,250 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is ST 3 over Water Monatiquot River?

The structure is 54 ft (16.5 m) long with a longest span of 25 ft (7.6 m) and a deck 174 ft wide.

Who owns ST 3 over Water Monatiquot River?

It is owned by the State Highway Agency.