US Bridges

HWY N Wshngtn ST over HWY Water ST

Fair

Suffolk County, Massachusetts · Near Boston Garden · Structure no. B1601637RMUNNBI

Built
1900
125 years old, rebuilt 1992
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
36,206
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

HWY N Wshngtn ST over HWY Water ST is a steel stringer/multi-beam or girder carrying HWY N Wshngtn ST over HWY Water ST in Suffolk County, Massachusetts. It was built in 1900 and reconstructed in 1992, so it is 125 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 36,206 vehicles a day, roughly 13% of them trucks, projected to reach 101,707 by 2033. The structure is 60 ft (18.3 m) long and 138 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHWY N Wshngtn ST
CrossesHWY Water ST
LocationNear Boston Garden
RouteCity Street 0
Coordinates42.37073, -71.06132
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.4 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span57 ft (17.4 m)
Deck width138 ft (42.1 m)
Roadway width110 ft (33.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,206 (2024)
Projected traffic101,707 by 2033
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$781,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY N Wshngtn ST over HWY Water ST built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1992.

What condition is HWY N Wshngtn ST over HWY Water ST 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 February 2024.

How much traffic does HWY N Wshngtn ST over HWY Water ST carry?

About 36,206 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is HWY N Wshngtn ST over HWY Water ST?

The structure is 60 ft (18.3 m) long with a longest span of 57 ft (17.4 m) and a deck 138 ft wide.

Who owns HWY N Wshngtn ST over HWY Water ST?

It is owned by the City or Municipal Highway Agency.