US Bridges

ST110 /RTE3A/CHMFD over RR Bmrr

Fair

Middlesex County, Massachusetts · 15.2 M E of Thorndike ST · Structure no. L150092DKDOTNBI

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
157 ft
1 main span
Daily traffic
50,300
2017 count
Owner
State
State Highway Agency

About this bridge

ST110 /RTE3A/CHMFD over RR Bmrr is a steel stringer/multi-beam or girder carrying ST110 /RTE3A/CHMFD over RR Bmrr in Middlesex County, Massachusetts. It was built in 1971, so it is 54 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 50,300 vehicles a day, roughly 7% of them trucks, projected to reach 66,489 by 2032. The structure is 157 ft (47.9 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST110 /RTE3A/CHMFD
CrossesRR Bmrr
Location15.2 M E of Thorndike ST
RouteState Highway 3A
CountyMiddlesex County
StateMassachusetts
Coordinates42.63826, -71.31583
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment9: Superior to present desirable criteria
Operating rating56.7 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length157 ft (47.9 m)
Longest span150 ft (45.7 m)
Deck width63 ft (19.1 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,300 (2017)
Projected traffic66,489 by 2032
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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$8.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST110 /RTE3A/CHMFD over RR Bmrr built?

It was built in 1971, making it 54 years old in 2025.

What condition is ST110 /RTE3A/CHMFD over RR 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 September 2023.

How much traffic does ST110 /RTE3A/CHMFD over RR Bmrr carry?

About 50,300 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is ST110 /RTE3A/CHMFD over RR Bmrr?

The structure is 157 ft (47.9 m) long with a longest span of 150 ft (45.7 m) and a deck 63 ft wide.

Who owns ST110 /RTE3A/CHMFD over RR Bmrr?

It is owned by the State Highway Agency.