US Bridges

HWY Turner Hill over Water Dunbar Brook

Good

Franklin County, Massachusetts · 400 from Int. W/ Main RD · Structure no. M26003ADEMUNNBI

Built
1997
28 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
37 ft
2 main spans
Daily traffic
129
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Turner Hill over Water Dunbar Brook is a concrete culvert carrying HWY Turner Hill over Water Dunbar Brook in Franklin County, Massachusetts. It was built in 1997, so it is 28 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 129 vehicles a day, roughly 1% of them trucks, projected to reach 16 by 2032. The structure is 37 ft (11.3 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesHWY Turner Hill
CrossesWater Dunbar Brook
Location400 from Int. W/ Main RD
RouteCity Street 0
Coordinates42.72775, -73.01139
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.5 US tons
Inventory rating61.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span18 ft (5.4 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic129 (2017)
Projected traffic16 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Turner Hill over Water Dunbar Brook built?

It was built in 1997, making it 28 years old in 2025.

What condition is HWY Turner Hill over Water Dunbar 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 Turner Hill over Water Dunbar Brook carry?

About 129 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is HWY Turner Hill over Water Dunbar Brook?

The structure is 37 ft (11.3 m) long with a longest span of 18 ft (5.4 m) and a deck 25 ft wide.

Who owns HWY Turner Hill over Water Dunbar Brook?

It is owned by the Town or Township Highway Agency.