US Bridges

ST 37 Washngton ST over RR Mbta/Csx

Poor

Norfolk County, Massachusetts · .48 KM S of Plain ST · Structure no. B2101736UDOT634

Built
1948
77 years old
Condition
Poor
inspected February 2024
Type
Girder and Floorbeam System
Steel
Length
97 ft
1 main span
Daily traffic
29,095
2024 count
Owner
State
State Highway Agency

About this bridge

ST 37 Washngton ST over RR Mbta/Csx is a steel girder and floorbeam system carrying ST 37 Washngton ST over RR Mbta/Csx in Norfolk County, Massachusetts. It was built in 1948, so it is 77 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 29,095 vehicles a day, roughly 8% of them trucks, projected to reach 50,696 by 2033. The structure is 97 ft (29.6 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST 37 Washngton ST
CrossesRR Mbta/Csx
Location.48 KM S of Plain ST
RouteState Highway 37
CountyNorfolk County
StateMassachusetts
Coordinates42.18688, -71.00813
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.8 US tons
Inventory rating19.6 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length97 ft (29.6 m)
Longest span95 ft (29 m)
Deck width52 ft (15.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,095 (2024)
Projected traffic50,696 by 2033
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$8.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 37 Washngton ST over RR Mbta/Csx built?

It was built in 1948, making it 77 years old in 2025.

What condition is ST 37 Washngton ST over RR Mbta/Csx in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does ST 37 Washngton ST over RR Mbta/Csx carry?

About 29,095 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is ST 37 Washngton ST over RR Mbta/Csx?

The structure is 97 ft (29.6 m) long with a longest span of 95 ft (29 m) and a deck 52 ft wide.

Who owns ST 37 Washngton ST over RR Mbta/Csx?

It is owned by the State Highway Agency.