US Bridges

ST146 SB over HWY Lackey Dam RD

Fair

Worcester County, Massachusetts · 0.1 MI S Dougls-Uxbrg Tl · Structure no. U020591N6DOTNBI

Built
1983
42 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
1 main span
Daily traffic
20,057
2020 count
Owner
State
State Highway Agency

About this bridge

ST146 SB over HWY Lackey Dam RD is a steel stringer/multi-beam or girder carrying ST146 SB over HWY Lackey Dam RD in Worcester County, Massachusetts. It was built in 1983, so it is 42 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 20,057 vehicles a day, roughly 15% of them trucks, projected to reach 20,531 by 2033. The structure is 92 ft (28 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesST146 SB
CrossesHWY Lackey Dam RD
Location0.1 MI S Dougls-Uxbrg Tl
RouteState Highway 146
CountyWorcester County
StateMassachusetts
Coordinates42.08908, -71.69529
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length92 ft (28 m)
Longest span88 ft (26.8 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,057 (2020)
Projected traffic20,531 by 2033
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$775,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST146 SB over HWY Lackey Dam RD built?

It was built in 1983, making it 42 years old in 2025.

What condition is ST146 SB over HWY Lackey Dam RD 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 ST146 SB over HWY Lackey Dam RD carry?

About 20,057 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is ST146 SB over HWY Lackey Dam RD?

The structure is 92 ft (28 m) long with a longest span of 88 ft (26.8 m) and a deck 45 ft wide.

Who owns ST146 SB over HWY Lackey Dam RD?

It is owned by the State Highway Agency.