US Bridges

HWY Arsenal ST over Water Charles River

Fair

Suffolk County, Massachusetts · City Line Wat Bos · Structure no. B160154EFDOTNBI

Built
1925
100 years old, rebuilt 1968
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
203 ft
2 main spans
Daily traffic
34,009
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Arsenal ST over Water Charles River is a concrete arch - deck carrying HWY Arsenal ST over Water Charles River in Suffolk County, Massachusetts. It was built in 1925 and reconstructed in 1968, so it is 100 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 34,009 vehicles a day, roughly 7% of them trucks, projected to reach 63,172 by 2032. The structure is 203 ft (61.9 m) long and 64 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Arsenal ST
CrossesWater Charles River
LocationCity Line Wat Bos
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.36171, -71.14724
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
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.8 US tons
Inventory rating42.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length203 ft (61.9 m)
Longest span70 ft (21.3 m)
Deck width64 ft (19.5 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,009 (2023)
Projected traffic63,172 by 2032
Trucks7%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11.8 million (2025 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was HWY Arsenal ST over Water Charles River built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1968.

What condition is HWY Arsenal ST 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 November 2023.

How much traffic does HWY Arsenal ST over Water Charles River carry?

About 34,009 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is HWY Arsenal ST over Water Charles River?

The structure is 203 ft (61.9 m) long with a longest span of 70 ft (21.3 m) and a deck 64 ft wide.

Who owns HWY Arsenal ST over Water Charles River?

It is owned by the State Highway Agency.