US Bridges

ST 9 /ST30/WRCSTR over Water Sudbury River

Good

Middlesex County, Massachusetts · .25 MI W of Prospect ST · Structure no. F070069BHDOTNBI

Built
2009
16 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
94 ft
1 main span
Daily traffic
52,165
2022 count
Owner
State
State Highway Agency

About this bridge

ST 9 /ST30/WRCSTR over Water Sudbury River is a steel stringer/multi-beam or girder carrying ST 9 /ST30/WRCSTR over Water Sudbury River in Middlesex County, Massachusetts. It was built in 2009, so it is 16 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 52,165 vehicles a day, roughly 5% of them trucks, projected to reach 82,439 by 2032. The structure is 94 ft (28.6 m) long and 94 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 9 /ST30/WRCSTR
CrossesWater Sudbury River
Location.25 MI W of Prospect ST
RouteState Highway 9
CountyMiddlesex County
StateMassachusetts
Coordinates42.29881, -71.42681
Functional classUrban Other Principal Arterial

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.9 US tons
Inventory rating56.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length94 ft (28.6 m)
Longest span90 ft (27.5 m)
Deck width94 ft (28.8 m)
Roadway width72 ft (22 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,165 (2022)
Projected traffic82,439 by 2032
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$70,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 9 /ST30/WRCSTR over Water Sudbury River built?

It was built in 2009, making it 16 years old in 2025.

What condition is ST 9 /ST30/WRCSTR over Water Sudbury River 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 October 2023.

How much traffic does ST 9 /ST30/WRCSTR over Water Sudbury River carry?

About 52,165 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is ST 9 /ST30/WRCSTR over Water Sudbury River?

The structure is 94 ft (28.6 m) long with a longest span of 90 ft (27.5 m) and a deck 94 ft wide.

Who owns ST 9 /ST30/WRCSTR over Water Sudbury River?

It is owned by the State Highway Agency.