US Bridges

US 20 Sturbrdge RD over Water Mill Brook

Fair

Hampden County, Massachusetts · 0.1 MI E of ST 19 · Structure no. B24003191DOTNBI

Built
1955
70 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
11,897
2018 count
Owner
State
State Highway Agency

About this bridge

US 20 Sturbrdge RD over Water Mill Brook is a steel stringer/multi-beam or girder carrying US 20 Sturbrdge RD over Water Mill Brook in Hampden County, Massachusetts. It was built in 1955, so it is 70 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 5 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 11,897 vehicles a day, roughly 7% of them trucks, projected to reach 14,296 by 2033. The structure is 51 ft (15.5 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 20 Sturbrdge RD
CrossesWater Mill Brook
Location0.1 MI E of ST 19
RouteU.S. Route 20
CountyHampden County
StateMassachusetts
Coordinates42.12212, -72.19891
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.3 US tons
Inventory rating30.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length51 ft (15.5 m)
Longest span48 ft (14.5 m)
Deck width52 ft (15.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,897 (2018)
Projected traffic14,296 by 2033
Trucks7%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 20 Sturbrdge RD over Water Mill Brook built?

It was built in 1955, making it 70 years old in 2025.

What condition is US 20 Sturbrdge RD over Water Mill 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 2024.

How much traffic does US 20 Sturbrdge RD over Water Mill Brook carry?

About 11,897 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is US 20 Sturbrdge RD over Water Mill Brook?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.5 m) and a deck 52 ft wide.

Who owns US 20 Sturbrdge RD over Water Mill Brook?

It is owned by the State Highway Agency.