US Bridges

HWY So Sta Ib Rp over RR MBTA

Good

Suffolk County, Massachusetts · South Station · Structure no. B16677BQ8MBTNBI

Built
1995
30 years old
Condition
Good
inspected October 2021
Type
Box Beam or Girders - Multiple
Steel
Length
396 ft
6 main spans
Daily traffic
—
Owner
State
Other State Agency

About this bridge

HWY So Sta Ib Rp over RR MBTA is a steel box beam or girders - multiple carrying HWY So Sta Ib Rp over RR MBTA in Suffolk County, Massachusetts. It was built in 1995, so it is 30 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

No traffic count is recorded. The structure is 396 ft (120.7 m) long and 25 ft wide.

Location

Open in Google Maps
CarriesHWY So Sta Ib Rp
CrossesRR MBTA
LocationSouth Station
RouteInterstate 0
CountySuffolk County
StateMassachusetts
Coordinates42.34893, -71.05625
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2021
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating89.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length396 ft (120.7 m)
Longest span91 ft (27.7 m)
Deck width25 ft (7.6 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of relocation of road
Estimated improvement cost$18.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY So Sta Ib Rp over RR MBTA built?

It was built in 1995, making it 30 years old in 2025.

What condition is HWY So Sta Ib Rp over RR MBTA in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2021.

How much traffic does HWY So Sta Ib Rp over RR MBTA carry?

No traffic count is recorded for this structure.

How long is HWY So Sta Ib Rp over RR MBTA?

The structure is 396 ft (120.7 m) long with a longest span of 91 ft (27.7 m) and a deck 25 ft wide.

Who owns HWY So Sta Ib Rp over RR MBTA?

It is owned by the Other State Agency.