US Bridges

HWY Meridian ST over ST 1 A/Nb

Fair

Suffolk County, Massachusetts · At East End of Cal Tnl · Structure no. B16234BKUDOTNBI

Built
1961
64 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
20,689
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Meridian ST over ST 1 A/Nb is a steel stringer/multi-beam or girder carrying HWY Meridian ST over ST 1 A/Nb in Suffolk County, Massachusetts. It was built in 1961, so it is 64 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 20,689 vehicles a day, roughly 12% of them trucks. The structure is 47 ft (14.3 m) long and 62 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesHWY Meridian ST
CrossesST 1 A/Nb
LocationAt East End of Cal Tnl
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.3726, -71.03902
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating66.7 US tons
Inventory rating48.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span40 ft (12.1 m)
Deck width62 ft (18.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,689 (2023)
Projected traffic—
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Meridian ST over ST 1 A/Nb built?

It was built in 1961, making it 64 years old in 2025.

What condition is HWY Meridian ST over ST 1 A/Nb 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 May 2023.

How much traffic does HWY Meridian ST over ST 1 A/Nb carry?

About 20,689 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is HWY Meridian ST over ST 1 A/Nb?

The structure is 47 ft (14.3 m) long with a longest span of 40 ft (12.1 m) and a deck 62 ft wide.

Who owns HWY Meridian ST over ST 1 A/Nb?

It is owned by the State Highway Agency.