US Bridges

ST138 Washngton ST over I 93 /US1

Fair

Norfolk County, Massachusetts · ST 138 at ST 128 · Structure no. C0202836ADOTNBI

Built
1955
70 years old, rebuilt 1991
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
168 ft
2 main spans
Daily traffic
48,879
2023 count
Owner
State
State Highway Agency

About this bridge

ST138 Washngton ST over I 93 /US1 is a steel continuous stringer/multi-beam or girder carrying ST138 Washngton ST over I 93 /US1 in Norfolk County, Massachusetts. It was built in 1955 and reconstructed in 1991, so it is 70 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 48,879 vehicles a day, roughly 7% of them trucks, projected to reach 72,648 by 2032. The structure is 168 ft (51.2 m) long and 82 ft wide.

Location

Open in Google Maps
CarriesST138 Washngton ST
CrossesI 93 /US1
LocationST 138 at ST 128
RouteState Highway 138
CountyNorfolk County
StateMassachusetts
Coordinates42.20319, -71.11927
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
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 inspectionSeptember 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.6 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span81 ft (24.7 m)
Deck width82 ft (25 m)
Roadway width69 ft (21 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,879 (2023)
Projected traffic72,648 by 2032
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$12.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST138 Washngton ST over I 93 /US1 built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1991.

What condition is ST138 Washngton ST over I 93 /US1 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 ST138 Washngton ST over I 93 /US1 carry?

About 48,879 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is ST138 Washngton ST over I 93 /US1?

The structure is 168 ft (51.2 m) long with a longest span of 81 ft (24.7 m) and a deck 82 ft wide.

Who owns ST138 Washngton ST over I 93 /US1?

It is owned by the State Highway Agency.