US Bridges

ST114 Andover ST over ST128

Fair

Essex County, Massachusetts · .8 MI Lowell Street · Structure no. P030162UMDOTNBI

Built
1938
87 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
86 ft
2 main spans
Daily traffic
41,302
2024 count
Owner
State
State Highway Agency

About this bridge

ST114 Andover ST over ST128 is a steel continuous stringer/multi-beam or girder carrying ST114 Andover ST over ST128 in Essex County, Massachusetts. It was built in 1938, so it is 87 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 41,302 vehicles a day, roughly 5% of them trucks, projected to reach 70,911 by 2031. The structure is 86 ft (26.2 m) long and 66 ft wide.

Location

Open in Google Maps
CarriesST114 Andover ST
CrossesST128
Location.8 MI Lowell Street
RouteState Highway 114
CountyEssex County
StateMassachusetts
Coordinates42.53996, -70.9381
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 alignment6: Equal to present minimum criteria
Operating rating61.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length86 ft (26.2 m)
Longest span41 ft (12.5 m)
Deck width66 ft (20.2 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,302 (2024)
Projected traffic70,911 by 2031
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST114 Andover ST over ST128 built?

It was built in 1938, making it 87 years old in 2025.

What condition is ST114 Andover ST over ST128 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 December 2024.

How much traffic does ST114 Andover ST over ST128 carry?

About 41,302 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is ST114 Andover ST over ST128?

The structure is 86 ft (26.2 m) long with a longest span of 41 ft (12.5 m) and a deck 66 ft wide.

Who owns ST114 Andover ST over ST128?

It is owned by the State Highway Agency.