US Bridges

HWY Eliot Bridge over Water Charles River

FairPosted for load

Suffolk County, Massachusetts · .4 MI NW of Harvard ST · Structure no. B162464EVDOTNBI

Built
1950
75 years old
Condition
Fair
inspected August 2023
Type
Truss - Deck
Steel Continuous
Length
368 ft
3 main spans
Daily traffic
46,415
2022 count
Owner
State
State Highway Agency

About this bridge

HWY Eliot Bridge over Water Charles River is a steel continuous truss - deck carrying HWY Eliot Bridge over Water Charles River in Suffolk County, Massachusetts. It was built in 1950, so it is 75 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. Its operating status is: posted for other load-capacity restriction.

It carries about 46,415 vehicles a day, roughly 1% of them trucks, projected to reach 110,709 by 2032. The structure is 368 ft (112.2 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Eliot Bridge
CrossesWater Charles River
Location.4 MI NW of Harvard ST
RouteCity Street 0
Coordinates42.37175, -71.13286
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating41.1 US tons
Inventory rating24.6 US tons

Structure

Structure typeTruss - Deck
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+4 approach)
Design loadH 15
Structure length368 ft (112.2 m)
Longest span110 ft (33.5 m)
Deck width86 ft (26.2 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,415 (2022)
Projected traffic110,709 by 2032
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$28.8 million (2025 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was HWY Eliot Bridge over Water Charles River built?

It was built in 1950, making it 75 years old in 2025.

What condition is HWY Eliot Bridge 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 2023.

How much traffic does HWY Eliot Bridge over Water Charles River carry?

About 46,415 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is HWY Eliot Bridge over Water Charles River?

The structure is 368 ft (112.2 m) long with a longest span of 110 ft (33.5 m) and a deck 86 ft wide.

Who owns HWY Eliot Bridge over Water Charles River?

It is owned by the State Highway Agency.