US Bridges

ST123 Center ST over Water Trout Brook

Good

Plymouth County, Massachusetts · At JCT Plymouth ST · Structure no. B2503742RMUNNBI

Built
1901
124 years old, rebuilt 1993
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
14,224
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

ST123 Center ST over Water Trout Brook is a prestressed concrete slab carrying ST123 Center ST over Water Trout Brook in Plymouth County, Massachusetts. It was built in 1901 and reconstructed in 1993, so it is 124 years old, older 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 14,224 vehicles a day, roughly 6% of them trucks, projected to reach 41,062 by 2032. The structure is 25 ft (7.6 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST123 Center ST
CrossesWater Trout Brook
LocationAt JCT Plymouth ST
RouteCity Street 123
CountyPlymouth County
StateMassachusetts
Coordinates42.08398, -71.0124
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 protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating84.1 US tons
Inventory rating50.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span21 ft (6.4 m)
Deck width52 ft (15.8 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,224 (2023)
Projected traffic41,062 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$544,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST123 Center ST over Water Trout Brook built?

It was built in 1901, making it 124 years old in 2025. It was reconstructed in 1993.

What condition is ST123 Center ST over Water Trout Brook 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 December 2023.

How much traffic does ST123 Center ST over Water Trout Brook carry?

About 14,224 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is ST123 Center ST over Water Trout Brook?

The structure is 25 ft (7.6 m) long with a longest span of 21 ft (6.4 m) and a deck 52 ft wide.

Who owns ST123 Center ST over Water Trout Brook?

It is owned by the City or Municipal Highway Agency.