US Bridges

HWY Ramp B over ST 9 & Ramp a

Fair

Middlesex County, Massachusetts · 0.9 MI West Rts 27 & 9 · Structure no. N03032278DOTNBI

Built
1977
48 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
137 ft
3 main spans
Daily traffic
8,200
2013 count
Owner
State
State Highway Agency

About this bridge

HWY Ramp B over ST 9 & Ramp a is a steel stringer/multi-beam or girder carrying HWY Ramp B over ST 9 & Ramp a in Middlesex County, Massachusetts. It was built in 1977, so it is 48 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 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 8,200 vehicles a day, roughly 10% of them trucks, projected to reach 12,950 by 2032. The structure is 137 ft (41.8 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Ramp B
CrossesST 9 & Ramp a
Location0.9 MI West Rts 27 & 9
RouteState Highway 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.29938, -71.37939
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating67.7 US tons
Inventory rating40.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length137 ft (41.8 m)
Longest span36 ft (11 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,200 (2013)
Projected traffic12,950 by 2032
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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$4.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Ramp B over ST 9 & Ramp a built?

It was built in 1977, making it 48 years old in 2025.

What condition is HWY Ramp B over ST 9 & Ramp a 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 2023.

How much traffic does HWY Ramp B over ST 9 & Ramp a carry?

About 8,200 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is HWY Ramp B over ST 9 & Ramp a?

The structure is 137 ft (41.8 m) long with a longest span of 36 ft (11 m) and a deck 35 ft wide.

Who owns HWY Ramp B over ST 9 & Ramp a?

It is owned by the State Highway Agency.