US Bridges

HWY Blandford RD over Water Mike Dunn Brook

Fair

Hampden County, Massachusetts · 0.6M S RT20 at Mitchel RD · Structure no. C1101600NMUNNBI

Built
1940
85 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Concrete
Length
38 ft
1 main span
Daily traffic
259
2018 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Blandford RD over Water Mike Dunn Brook is a concrete tee beam carrying HWY Blandford RD over Water Mike Dunn Brook in Hampden County, Massachusetts. It was built in 1940, so it is 85 years old, older 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 259 vehicles a day, roughly 6% of them trucks, projected to reach 1,263 by 2031. The structure is 38 ft (11.5 m) long and 24 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

Open in Google Maps
CarriesHWY Blandford RD
CrossesWater Mike Dunn Brook
Location0.6M S RT20 at Mitchel RD
RouteCity Street 0
CountyHampden County
StateMassachusetts
Coordinates42.26294, -73.00122
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 rating49.2 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length38 ft (11.5 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic259 (2018)
Projected traffic1,263 by 2031
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$854,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Blandford RD over Water Mike Dunn Brook built?

It was built in 1940, making it 85 years old in 2025.

What condition is HWY Blandford RD over Water Mike Dunn 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 December 2024.

How much traffic does HWY Blandford RD over Water Mike Dunn Brook carry?

About 259 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is HWY Blandford RD over Water Mike Dunn Brook?

The structure is 38 ft (11.5 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns HWY Blandford RD over Water Mike Dunn Brook?

It is owned by the Town or Township Highway Agency.