US Bridges

HWY Plymouth RD over Water Charles River

Fair

Norfolk County, Massachusetts · 0.5 MI W of Franklin T.L. · Structure no. B060232A8MUNNBI

Built
1956
69 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
1,000
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Plymouth RD over Water Charles River is a prestressed concrete slab carrying HWY Plymouth RD over Water Charles River in Norfolk County, Massachusetts. It was built in 1956, so it is 69 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 1,000 vehicles a day, roughly 2% of them trucks, projected to reach 1,421 by 2031. The structure is 41 ft (12.5 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Plymouth RD
CrossesWater Charles River
Location0.5 MI W of Franklin T.L.
RouteCity Street 0
Coordinates42.12287, -71.44774
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span37 ft (11.3 m)
Deck width34 ft (10.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,421 by 2031
Trucks2%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$1.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Plymouth RD over Water Charles River built?

It was built in 1956, making it 69 years old in 2025.

What condition is HWY Plymouth RD over Water Charles 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 August 2024.

How much traffic does HWY Plymouth RD over Water Charles River carry?

About 1,000 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is HWY Plymouth RD over Water Charles River?

The structure is 41 ft (12.5 m) long with a longest span of 37 ft (11.3 m) and a deck 34 ft wide.

Who owns HWY Plymouth RD over Water Charles River?

It is owned by the Town or Township Highway Agency.