US Bridges

HWY Colrain RD over Water Allen Brook

Fair

Franklin County, Massachusetts · 0.5 MI N of Plain RD · Structure no. G120170QAMUNNBI

Built
1989
36 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
1,940
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Colrain RD over Water Allen Brook is a concrete culvert carrying HWY Colrain RD over Water Allen Brook in Franklin County, Massachusetts. It was built in 1989, so it is 36 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,940 vehicles a day, roughly 7% of them trucks, projected to reach 816 by 2032. The structure is 24 ft (7.3 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Colrain RD
CrossesWater Allen Brook
Location0.5 MI N of Plain RD
RouteCity Street 0
CountyFranklin County
StateMassachusetts
Coordinates42.61198, -72.63293
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.3 US tons
Inventory rating37.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,940 (2019)
Projected traffic816 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$311,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Colrain RD over Water Allen Brook built?

It was built in 1989, making it 36 years old in 2025.

What condition is HWY Colrain RD over Water Allen Brook in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does HWY Colrain RD over Water Allen Brook carry?

About 1,940 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is HWY Colrain RD over Water Allen Brook?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m) and a deck 56 ft wide.

Who owns HWY Colrain RD over Water Allen Brook?

It is owned by the Town or Township Highway Agency.