US Bridges

ST 2 A/ST110/AYER over RR Mbta/Bmrr

Fair

Middlesex County, Massachusetts · 1.75 MI NW of I-495 · Structure no. L1301126NDOTNBI

Built
1975
50 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
1 main span
Daily traffic
12,797
2023 count
Owner
State
State Highway Agency

About this bridge

ST 2 A/ST110/AYER over RR Mbta/Bmrr is a steel stringer/multi-beam or girder carrying ST 2 A/ST110/AYER over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1975, so it is 50 years old, younger 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 6 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 12,797 vehicles a day, roughly 7% of them trucks, projected to reach 9,476 by 2031. The structure is 92 ft (28 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST 2 A/ST110/AYER
CrossesRR Mbta/Bmrr
Location1.75 MI NW of I-495
RouteState Highway 2A
CountyMiddlesex County
StateMassachusetts
Coordinates42.55117, -71.52844
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.1 US tons
Inventory rating50.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length92 ft (28 m)
Longest span88 ft (26.8 m)
Deck width57 ft (17.4 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,797 (2023)
Projected traffic9,476 by 2031
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$985,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 2 A/ST110/AYER over RR Mbta/Bmrr built?

It was built in 1975, making it 50 years old in 2025.

What condition is ST 2 A/ST110/AYER over RR Mbta/Bmrr 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 November 2024.

How much traffic does ST 2 A/ST110/AYER over RR Mbta/Bmrr carry?

About 12,797 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is ST 2 A/ST110/AYER over RR Mbta/Bmrr?

The structure is 92 ft (28 m) long with a longest span of 88 ft (26.8 m) and a deck 57 ft wide.

Who owns ST 2 A/ST110/AYER over RR Mbta/Bmrr?

It is owned by the State Highway Agency.