US Bridges

ST 9 Bstn-Wrcstr over ST140 Grafton ST

Poor

Worcester County, Massachusetts · ST 9/ST 140 · Structure no. S140071M0DOTNBI

Built
1932
93 years old
Condition
Poor
inspected July 2024
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
47,107
2024 count
Owner
State
State Highway Agency

About this bridge

ST 9 Bstn-Wrcstr over ST140 Grafton ST is a concrete tee beam carrying ST 9 Bstn-Wrcstr over ST140 Grafton ST in Worcester County, Massachusetts. It was built in 1932, so it is 93 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 47,107 vehicles a day, roughly 6% of them trucks, projected to reach 71,384 by 2031. The structure is 40 ft (12.2 m) long and 74 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST 9 Bstn-Wrcstr
CrossesST140 Grafton ST
LocationST 9/ST 140
RouteState Highway 9
CountyWorcester County
StateMassachusetts
Coordinates42.2768, -71.71056
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 4 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.3 US tons
Inventory rating32.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length40 ft (12.2 m)
Longest span31 ft (9.4 m)
Deck width74 ft (22.6 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,107 (2024)
Projected traffic71,384 by 2031
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 9 Bstn-Wrcstr over ST140 Grafton ST built?

It was built in 1932, making it 93 years old in 2025.

What condition is ST 9 Bstn-Wrcstr over ST140 Grafton ST 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 July 2024.

How much traffic does ST 9 Bstn-Wrcstr over ST140 Grafton ST carry?

About 47,107 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is ST 9 Bstn-Wrcstr over ST140 Grafton ST?

The structure is 40 ft (12.2 m) long with a longest span of 31 ft (9.4 m) and a deck 74 ft wide.

Who owns ST 9 Bstn-Wrcstr over ST140 Grafton ST?

It is owned by the State Highway Agency.