US Bridges

HWY Coney ST over Water Traphole Brook

Good

Norfolk County, Massachusetts · .5 MI West of RTE 1 · Structure no. W030313KGMUNNBI

Built
1956
69 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
8,534
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Coney ST over Water Traphole Brook is a prestressed concrete slab carrying HWY Coney ST over Water Traphole Brook in Norfolk County, Massachusetts. It was built in 1956, so it is 69 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 8,534 vehicles a day, roughly 3% of them trucks, projected to reach 12,634 by 2032. The structure is 23 ft (7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHWY Coney ST
CrossesWater Traphole Brook
Location.5 MI West of RTE 1
RouteCity Street 0
CountyNorfolk County
StateMassachusetts
Coordinates42.15759, -71.20891
Functional classUrban Collector

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; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating80.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.7 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,534 (2023)
Projected traffic12,634 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Coney ST over Water Traphole Brook built?

It was built in 1956, making it 69 years old in 2025.

What condition is HWY Coney ST over Water Traphole 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 July 2023.

How much traffic does HWY Coney ST over Water Traphole Brook carry?

About 8,534 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is HWY Coney ST over Water Traphole Brook?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns HWY Coney ST over Water Traphole Brook?

It is owned by the Town or Township Highway Agency.