US Bridges

ST150 Main ST over Water Powwow River

Fair

Essex County, Massachusetts · In Center of Town · Structure no. A070052Y7DOTNBI

Built
1850
175 years old
Condition
Fair
inspected September 2023
Type
Arch - Deck
Masonry
Length
25 ft
1 main span
Daily traffic
12,700
2018 count
Owner
State
State Highway Agency

About this bridge

ST150 Main ST over Water Powwow River is a masonry arch - deck carrying ST150 Main ST over Water Powwow River in Essex County, Massachusetts. It was built in 1850, so it is 175 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 12,700 vehicles a day, roughly 4% of them trucks, projected to reach 3,879 by 2032. The structure is 25 ft (7.6 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST150 Main ST
CrossesWater Powwow River
LocationIn Center of Town
RouteState Highway 150
CountyEssex County
StateMassachusetts
Coordinates42.85761, -70.93068
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67.6 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width58 ft (17.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,700 (2018)
Projected traffic3,879 by 2032
Trucks4%
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$1.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST150 Main ST over Water Powwow River built?

It was built in 1850, making it 175 years old in 2025.

What condition is ST150 Main ST over Water Powwow 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 September 2023.

How much traffic does ST150 Main ST over Water Powwow River carry?

About 12,700 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is ST150 Main ST over Water Powwow River?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 58 ft wide.

Who owns ST150 Main ST over Water Powwow River?

It is owned by the State Highway Agency.