US Bridges

US 1 Boston ST over HWY Howlett ST

Fair

Essex County, Massachusetts · .8 MI N Ipswich River · Structure no. T060062TJDOTNBI

Built
1922
103 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete
Length
22 ft
1 main span
Daily traffic
15,400
2024 count
Owner
State
State Highway Agency

About this bridge

US 1 Boston ST over HWY Howlett ST is a concrete tee beam carrying US 1 Boston ST over HWY Howlett ST in Essex County, Massachusetts. It was built in 1922, so it is 103 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 15,400 vehicles a day, roughly 4% of them trucks, projected to reach 25,111 by 2031. The structure is 22 ft (6.7 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 1 Boston ST
CrossesHWY Howlett ST
Location.8 MI N Ipswich River
RouteState Highway 1
CountyEssex County
StateMassachusetts
Coordinates42.64271, -70.9388
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating36.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,400 (2024)
Projected traffic25,111 by 2031
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$718,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1 Boston ST over HWY Howlett ST built?

It was built in 1922, making it 103 years old in 2025.

What condition is US 1 Boston ST over HWY Howlett 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 September 2024.

How much traffic does US 1 Boston ST over HWY Howlett ST carry?

About 15,400 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is US 1 Boston ST over HWY Howlett ST?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns US 1 Boston ST over HWY Howlett ST?

It is owned by the State Highway Agency.