US Bridges

HWY South ST over Water Neponset River

Fair

Norfolk County, Massachusetts · .1 Im South of Common ST · Structure no. W030253KFMUNNBI

Built
1875
150 years old
Condition
Fair
inspected October 2023
Type
Arch - Deck
Masonry
Length
20 ft
1 main span
Daily traffic
2,327
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY South ST over Water Neponset River is a masonry arch - deck carrying HWY South ST over Water Neponset River in Norfolk County, Massachusetts. It was built in 1875, so it is 150 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.

It carries about 2,327 vehicles a day, roughly 17% of them trucks, projected to reach 3,474 by 2032. The structure is 20 ft (6.1 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHWY South ST
CrossesWater Neponset River
Location.1 Im South of Common ST
RouteCity Street 0
CountyNorfolk County
StateMassachusetts
Coordinates42.13848, -71.25117
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.6 US tons
Inventory rating83.6 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,327 (2023)
Projected traffic3,474 by 2032
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY South ST over Water Neponset River built?

It was built in 1875, making it 150 years old in 2025.

What condition is HWY South ST over Water Neponset 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 October 2023.

How much traffic does HWY South ST over Water Neponset River carry?

About 2,327 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is HWY South ST over Water Neponset River?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns HWY South ST over Water Neponset River?

It is owned by the Town or Township Highway Agency.