US Bridges

I 93 SB Onramp over HWY West ST

Fair

Norfolk County, Massachusetts · 1 MI N of JCT I93&128 · Structure no. Q010443BBDOTNBI

Built
1956
69 years old, rebuilt 1984
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
4,949
2022 count
Owner
State
State Highway Agency

About this bridge

I 93 SB Onramp over HWY West ST is a steel stringer/multi-beam or girder carrying I 93 SB Onramp over HWY West ST in Norfolk County, Massachusetts. It was built in 1956 and reconstructed in 1984, so it is 69 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 4,949 vehicles a day, roughly 6% of them trucks, projected to reach 21,636 by 2031. The structure is 56 ft (17.1 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI 93 SB Onramp
CrossesHWY West ST
Location1 MI N of JCT I93&128
RouteInterstate 93
CountyNorfolk County
StateMassachusetts
Coordinates42.23979, -71.02478
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 geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating81.9 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length56 ft (17.1 m)
Longest span53 ft (16.3 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,949 (2022)
Projected traffic21,636 by 2031
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$506,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 SB Onramp over HWY West ST built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1984.

What condition is I 93 SB Onramp over HWY West ST 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 I 93 SB Onramp over HWY West ST carry?

About 4,949 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I 93 SB Onramp over HWY West ST?

The structure is 56 ft (17.1 m) long with a longest span of 53 ft (16.3 m) and a deck 25 ft wide.

Who owns I 93 SB Onramp over HWY West ST?

It is owned by the State Highway Agency.