US Bridges

ST106 Plymouth ST over Water Satucket River

Fair

Plymouth County, Massachusetts · .5 M E of RTE 18 · Structure no. E0101249MDOTNBI

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
36 ft
2 main spans
Daily traffic
20,172
2024 count
Owner
State
State Highway Agency

About this bridge

ST106 Plymouth ST over Water Satucket River is a concrete culvert carrying ST106 Plymouth ST over Water Satucket River in Plymouth County, Massachusetts. It was built in 1971, so it is 54 years old, younger 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 20,172 vehicles a day, roughly 8% of them trucks, projected to reach 30,007 by 2031. The structure is 36 ft (11 m) long and 84 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST106 Plymouth ST
CrossesWater Satucket River
Location.5 M E of RTE 18
RouteState Highway 106
CountyPlymouth County
StateMassachusetts
Coordinates42.02165, -70.95049
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
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 rating76.7 US tons
Inventory rating30.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length36 ft (11 m)
Longest span16 ft (4.9 m)
Deck width84 ft (25.6 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,172 (2024)
Projected traffic30,007 by 2031
Trucks8%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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$1.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST106 Plymouth ST over Water Satucket River built?

It was built in 1971, making it 54 years old in 2025.

What condition is ST106 Plymouth ST over Water Satucket 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 July 2024.

How much traffic does ST106 Plymouth ST over Water Satucket River carry?

About 20,172 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is ST106 Plymouth ST over Water Satucket River?

The structure is 36 ft (11 m) long with a longest span of 16 ft (4.9 m) and a deck 84 ft wide.

Who owns ST106 Plymouth ST over Water Satucket River?

It is owned by the State Highway Agency.