US Bridges

Lower River RD #1 over Mill Brook

Good

Litchfield County, Connecticut · 200 Ft N of RTE 128 · Structure no. 06844

Built
2012
13 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
100
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lower River RD #1 over Mill Brook is a concrete slab carrying Lower River RD #1 over Mill Brook in Litchfield County, Connecticut. It was built in 2012, so it is 13 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 1% of them trucks, projected to reach 149 by 2036. The structure is 27 ft (8.2 m) long and 15 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLower River RD #1
CrossesMill Brook
Location200 Ft N of RTE 128
RouteCity Street 0
Coordinates41.87199, -73.3633
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width15 ft (4.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2016)
Projected traffic149 by 2036
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lower River RD #1 over Mill Brook built?

It was built in 2012, making it 13 years old in 2025.

What condition is Lower River RD #1 over Mill Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does Lower River RD #1 over Mill Brook carry?

About 100 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Lower River RD #1 over Mill Brook?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 15 ft wide.

Who owns Lower River RD #1 over Mill Brook?

It is owned by the Town or Township Highway Agency.