US Bridges

ST 9 over Water Swift River

Good

Hampshire County, Massachusetts · .3 M W JCT River RD · Structure no. B0502790DDOTNBI

Built
2007
18 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
6,315
2018 count
Owner
State
State Highway Agency

About this bridge

ST 9 over Water Swift River is a prestressed concrete stringer/multi-beam or girder carrying ST 9 over Water Swift River in Hampshire County, Massachusetts. It was built in 2007, so it is 18 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 6,315 vehicles a day, roughly 8% of them trucks, projected to reach 15,161 by 2032. The structure is 106 ft (32.2 m) long and 44 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesST 9
CrossesWater Swift River
Location.3 M W JCT River RD
RouteState Highway 9
CountyHampshire County
StateMassachusetts
Coordinates42.27381, -72.33762
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.8 US tons
Inventory rating56.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length106 ft (32.2 m)
Longest span102 ft (31 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,315 (2018)
Projected traffic15,161 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$695,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 9 over Water Swift River built?

It was built in 2007, making it 18 years old in 2025.

What condition is ST 9 over Water Swift 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 July 2023.

How much traffic does ST 9 over Water Swift River carry?

About 6,315 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is ST 9 over Water Swift River?

The structure is 106 ft (32.2 m) long with a longest span of 102 ft (31 m) and a deck 44 ft wide.

Who owns ST 9 over Water Swift River?

It is owned by the State Highway Agency.