US Bridges

ST 16 EB over HWY Access Ramp E

Fair

Suffolk County, Massachusetts · 3.2 KM S JCT SR60 & US1 · Structure no. C090143B1DOTNBI

Built
1955
70 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
74 ft
1 main span
Daily traffic
29,000
2024 count
Owner
State
State Highway Agency

About this bridge

ST 16 EB over HWY Access Ramp E is a steel stringer/multi-beam or girder carrying ST 16 EB over HWY Access Ramp E in Suffolk County, Massachusetts. It was built in 1955, so it is 70 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 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 29,000 vehicles a day, roughly 3% of them trucks, projected to reach 50,064 by 2033. The structure is 74 ft (22.5 m) long and 46 ft wide.

Location

Open in Google Maps
CarriesST 16 EB
CrossesHWY Access Ramp E
Location3.2 KM S JCT SR60 & US1
RouteState Highway 16
CountySuffolk County
StateMassachusetts
Coordinates42.40376, -71.03423
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 inspectionJanuary 2024
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 alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length74 ft (22.5 m)
Longest span68 ft (20.6 m)
Deck width46 ft (13.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,000 (2024)
Projected traffic50,064 by 2033
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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$3.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 16 EB over HWY Access Ramp E built?

It was built in 1955, making it 70 years old in 2025.

What condition is ST 16 EB over HWY Access Ramp E 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 2024.

How much traffic does ST 16 EB over HWY Access Ramp E carry?

About 29,000 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is ST 16 EB over HWY Access Ramp E?

The structure is 74 ft (22.5 m) long with a longest span of 68 ft (20.6 m) and a deck 46 ft wide.

Who owns ST 16 EB over HWY Access Ramp E?

It is owned by the State Highway Agency.