US Bridges

I 93 NB over Water Ipswich River

Fair

Middlesex County, Massachusetts · 1.1 MI N of ST-129 · Structure no. W380262HUDOTNBI

Built
1958
67 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
76,634
2024 count
Owner
State
State Highway Agency

About this bridge

I 93 NB over Water Ipswich River is a prestressed concrete stringer/multi-beam or girder carrying I 93 NB over Water Ipswich River in Middlesex County, Massachusetts. It was built in 1958, so it is 67 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 76,634 vehicles a day, roughly 4% of them trucks, projected to reach 213,206 by 2031. The structure is 41 ft (12.5 m) long and 83 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 93 NB
CrossesWater Ipswich River
Location1.1 MI N of ST-129
RouteInterstate 93
Coordinates42.55272, -71.13761
Functional classUrban Principal Arterial - Interstate

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.
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 protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.8 US tons
Inventory rating49.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span36 ft (11 m)
Deck width83 ft (25.3 m)
Roadway width79 ft (24 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,634 (2024)
Projected traffic213,206 by 2031
Trucks4%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$3.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 93 NB over Water Ipswich River built?

It was built in 1958, making it 67 years old in 2025.

What condition is I 93 NB over Water Ipswich 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 May 2024.

How much traffic does I 93 NB over Water Ipswich River carry?

About 76,634 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is I 93 NB over Water Ipswich River?

The structure is 41 ft (12.5 m) long with a longest span of 36 ft (11 m) and a deck 83 ft wide.

Who owns I 93 NB over Water Ipswich River?

It is owned by the State Highway Agency.