US Bridges

Minor Road over Leadmine Brook

FairPosted for load

Litchfield County, Connecticut · 4.8 KM N of Thomaston · Structure no. CEPNEDCT0910003

Built
1939
86 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
50
2023 count
Owner
Federal
Corps of Engineers (Civil)

About this bridge

Minor Road over Leadmine Brook is a steel stringer/multi-beam or girder carrying Minor Road over Leadmine Brook in Litchfield County, Connecticut. It was built in 1939, so it is 86 years old, older than the Connecticut average of 56.7 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 25% of them trucks, projected to reach 50 by 2040. The structure is 45 ft (13.6 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesMinor Road
CrossesLeadmine Brook
Location4.8 KM N of Thomaston
RouteFederal Lands Road 0
CountyLitchfield County
StateConnecticut
Coordinates41.70199, -73.05754
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74.6 US tons
Inventory rating48.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length45 ft (13.6 m)
Longest span42 ft (12.8 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic50 by 2040
Trucks25%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCorps of Engineers (Civil)
Maintained byCorps of Engineers (Civil)
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Minor Road over Leadmine Brook built?

It was built in 1939, making it 86 years old in 2025.

What condition is Minor Road over Leadmine 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 August 2023.

How much traffic does Minor Road over Leadmine Brook carry?

About 50 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is Minor Road over Leadmine Brook?

The structure is 45 ft (13.6 m) long with a longest span of 42 ft (12.8 m) and a deck 24 ft wide.

Who owns Minor Road over Leadmine Brook?

It is owned by the Corps of Engineers (Civil).