US Bridges

ST135 Milk ST over RR Mbta/Csx

Fair

Worcester County, Massachusetts · 1 MI S of ST-9 · Structure no. W2400722VDOT634

Built
1900
125 years old, rebuilt 1963
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
111 ft
1 main span
Daily traffic
11,236
2022 count
Owner
State
State Highway Agency

About this bridge

ST135 Milk ST over RR Mbta/Csx is a steel stringer/multi-beam or girder carrying ST135 Milk ST over RR Mbta/Csx in Worcester County, Massachusetts. It was built in 1900 and reconstructed in 1963, so it is 125 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 11,236 vehicles a day, roughly 6% of them trucks, projected to reach 20,531 by 2032. The structure is 111 ft (33.7 m) long and 49 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST135 Milk ST
CrossesRR Mbta/Csx
Location1 MI S of ST-9
RouteState Highway 135
CountyWorcester County
StateMassachusetts
Coordinates42.27431, -71.62491
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 alignment6: Equal to present minimum criteria
Operating rating53.1 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length111 ft (33.7 m)
Longest span71 ft (21.6 m)
Deck width49 ft (14.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,236 (2022)
Projected traffic20,531 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST135 Milk ST over RR Mbta/Csx built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1963.

What condition is ST135 Milk ST over RR Mbta/Csx 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 June 2023.

How much traffic does ST135 Milk ST over RR Mbta/Csx carry?

About 11,236 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is ST135 Milk ST over RR Mbta/Csx?

The structure is 111 ft (33.7 m) long with a longest span of 71 ft (21.6 m) and a deck 49 ft wide.

Who owns ST135 Milk ST over RR Mbta/Csx?

It is owned by the State Highway Agency.