US Bridges

US 20 WB over Comb ST146&PWRR&BLKSTN

Fair

Worcester County, Massachusetts · .3 MI S of Worcester T.L. · Structure no. M22046AMFDOTNBI

Built
2005
20 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
1,023 ft
5 main spans
Daily traffic
11,870
2022 count
Owner
State
State Highway Agency

About this bridge

US 20 WB over Comb ST146&PWRR&BLKSTN is a steel continuous box beam or girders - multiple carrying US 20 WB over Comb ST146&PWRR&BLKSTN in Worcester County, Massachusetts. It was built in 2005, so it is 20 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 11,870 vehicles a day, roughly 5% of them trucks, projected to reach 38,377 by 2032. The structure is 1,023 ft (311.7 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesUS 20 WB
CrossesComb ST146&PWRR&BLKSTN
Location.3 MI S of Worcester T.L.
RouteU.S. Route 20
CountyWorcester County
StateMassachusetts
Coordinates42.21329, -71.78377
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHS 20
Structure length1,023 ft (311.7 m)
Longest span160 ft (48.8 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic11,870 (2022)
Projected traffic38,377 by 2032
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$55.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 20 WB over Comb ST146&PWRR&BLKSTN built?

It was built in 2005, making it 20 years old in 2025.

What condition is US 20 WB over Comb ST146&PWRR&BLKSTN 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 September 2023.

How much traffic does US 20 WB over Comb ST146&PWRR&BLKSTN carry?

About 11,870 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is US 20 WB over Comb ST146&PWRR&BLKSTN?

The structure is 1,023 ft (311.7 m) long with a longest span of 160 ft (48.8 m) and a deck 40 ft wide.

Who owns US 20 WB over Comb ST146&PWRR&BLKSTN?

It is owned by the State Highway Agency.