US Bridges

HWY W Union ST over RR MBTA MP 24/440

Good

Plymouth County, Massachusetts · MBTA MP 24/440 · Structure no. E010154BKDOT634

Built
1997
28 years old
Condition
Good
inspected March 2024
Type
Girder and Floorbeam System
Steel
Length
95 ft
1 main span
Daily traffic
6,600
2024 count
Owner
State
State Highway Agency

About this bridge

HWY W Union ST over RR MBTA MP 24/440 is a steel girder and floorbeam system carrying HWY W Union ST over RR MBTA MP 24/440 in Plymouth County, Massachusetts. It was built in 1997, so it is 28 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.

It carries about 6,600 vehicles a day, roughly 5% of them trucks, projected to reach 9,002 by 2033. The structure is 95 ft (29 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY W Union ST
CrossesRR MBTA MP 24/440
LocationMBTA MP 24/440
RouteCity Street 0
CountyPlymouth County
StateMassachusetts
Coordinates42.02876, -70.98285
Functional classUrban Collector

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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating65.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length95 ft (29 m)
Longest span91 ft (27.7 m)
Deck width33 ft (10 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2024)
Projected traffic9,002 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of relocation of road
Estimated improvement cost$8.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY W Union ST over RR MBTA MP 24/440 built?

It was built in 1997, making it 28 years old in 2025.

What condition is HWY W Union ST over RR MBTA MP 24/440 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 March 2024.

How much traffic does HWY W Union ST over RR MBTA MP 24/440 carry?

About 6,600 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is HWY W Union ST over RR MBTA MP 24/440?

The structure is 95 ft (29 m) long with a longest span of 91 ft (27.7 m) and a deck 33 ft wide.

Who owns HWY W Union ST over RR MBTA MP 24/440?

It is owned by the State Highway Agency.