US Bridges

ST 16 Ramp over RR Mbta/Bmrr

Fair

Middlesex County, Massachusetts · .2 MI E of Santilli Cir · Structure no. E120024E8DOTNBI

Built
1954
71 years old, rebuilt 2002
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
175 ft
3 main spans
Daily traffic
21,300
2017 count
Owner
State
State Highway Agency

About this bridge

ST 16 Ramp over RR Mbta/Bmrr is a steel stringer/multi-beam or girder carrying ST 16 Ramp over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1954 and reconstructed in 2002, so it is 71 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 21,300 vehicles a day, roughly 5% of them trucks, projected to reach 41,251 by 2032. The structure is 175 ft (53.3 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 16 Ramp
CrossesRR Mbta/Bmrr
Location.2 MI E of Santilli Cir
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.40264, -71.06325
Functional classUrban Local

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.
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 inspectionJanuary 2025
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 geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.8 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 20
Structure length175 ft (53.3 m)
Longest span46 ft (14 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,300 (2017)
Projected traffic41,251 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$8.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 16 Ramp over RR Mbta/Bmrr built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2002.

What condition is ST 16 Ramp 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 January 2025.

How much traffic does ST 16 Ramp over RR Mbta/Bmrr carry?

About 21,300 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is ST 16 Ramp over RR Mbta/Bmrr?

The structure is 175 ft (53.3 m) long with a longest span of 46 ft (14 m) and a deck 52 ft wide.

Who owns ST 16 Ramp over RR Mbta/Bmrr?

It is owned by the State Highway Agency.