US Bridges

ST125 Conn WB over I 495

Poor

Essex County, Massachusetts · 1 KM N Methuen Town Line · Structure no. H120562RUDOTNBI

Built
1961
64 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
296 ft
5 main spans
Daily traffic
10,040
2024 count
Owner
State
State Highway Agency

About this bridge

ST125 Conn WB over I 495 is a steel stringer/multi-beam or girder carrying ST125 Conn WB over I 495 in Essex County, Massachusetts. It was built in 1961, so it is 64 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 10,040 vehicles a day, roughly 6% of them trucks, projected to reach 26,374 by 2032. The structure is 296 ft (90.2 m) long and 34 ft wide.

CarriesST125 Conn WB
CrossesI 495
Location1 KM N Methuen Town Line
RouteState Highway 125
Coordinates42.76199, -71.12208
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.8 US tons
Inventory rating29.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length296 ft (90.2 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.4 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,040 (2024)
Projected traffic26,374 by 2032
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$24.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST125 Conn WB over I 495 built?

It was built in 1961, making it 64 years old in 2025.

What condition is ST125 Conn WB over I 495 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does ST125 Conn WB over I 495 carry?

About 10,040 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is ST125 Conn WB over I 495?

The structure is 296 ft (90.2 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns ST125 Conn WB over I 495?

It is owned by the State Highway Agency.