US Bridges

HWY Lwll Conn SB over I 495 Ramp B-11

Fair

Middlesex County, Massachusetts · .16 KM S Rt 495 · Structure no. C080332H1DOTNBI

Built
1959
66 years old, rebuilt 1984
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
115 ft
3 main spans
Daily traffic
26,100
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Lwll Conn SB over I 495 Ramp B-11 is a steel stringer/multi-beam or girder carrying HWY Lwll Conn SB over I 495 Ramp B-11 in Middlesex County, Massachusetts. It was built in 1959 and reconstructed in 1984, so it is 66 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 26,100 vehicles a day, roughly 5% of them trucks, projected to reach 41,062 by 2031. The structure is 115 ft (35 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesHWY Lwll Conn SB
CrossesI 495 Ramp B-11
Location.16 KM S Rt 495
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.60602, -71.32052
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (35 m)
Longest span48 ft (14.5 m)
Deck width45 ft (13.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,100 (2024)
Projected traffic41,062 by 2031
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$4.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Lwll Conn SB over I 495 Ramp B-11 built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1984.

What condition is HWY Lwll Conn SB over I 495 Ramp B-11 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 HWY Lwll Conn SB over I 495 Ramp B-11 carry?

About 26,100 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is HWY Lwll Conn SB over I 495 Ramp B-11?

The structure is 115 ft (35 m) long with a longest span of 48 ft (14.5 m) and a deck 45 ft wide.

Who owns HWY Lwll Conn SB over I 495 Ramp B-11?

It is owned by the State Highway Agency.