US Bridges

HWY Truman HWY over Water Neponset River

Fair

Suffolk County, Massachusetts · .32 KM N of Neponst Vl Pk · Structure no. B162244EWDOTNBI

Built
1939
86 years old
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
80 ft
1 main span
Daily traffic
18,900
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Truman HWY over Water Neponset River is a concrete arch - deck carrying HWY Truman HWY over Water Neponset River in Suffolk County, Massachusetts. It was built in 1939, so it is 86 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 18,900 vehicles a day, roughly 10% of them trucks, projected to reach 26,848 by 2031. The structure is 80 ft (24.4 m) long and 87 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Truman HWY
CrossesWater Neponset River
Location.32 KM N of Neponst Vl Pk
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.23765, -71.12519
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating75.6 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length80 ft (24.4 m)
Longest span76 ft (23.2 m)
Deck width87 ft (26.5 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,900 (2024)
Projected traffic26,848 by 2031
Trucks10%
Lanes on structure4
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$118,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Truman HWY over Water Neponset River built?

It was built in 1939, making it 86 years old in 2025.

What condition is HWY Truman HWY 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 July 2024.

How much traffic does HWY Truman HWY over Water Neponset River carry?

About 18,900 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is HWY Truman HWY over Water Neponset River?

The structure is 80 ft (24.4 m) long with a longest span of 76 ft (23.2 m) and a deck 87 ft wide.

Who owns HWY Truman HWY over Water Neponset River?

It is owned by the State Highway Agency.