US Bridges

River Road over Mill Brook

Fair

Litchfield County, Connecticut · JCT RTE 128 & River RD #1 · Structure no. 05627

Built
1987
38 years old
Condition
Fair
inspected December 2024
Type
Slab
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
265
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

River Road over Mill Brook is a prestressed concrete slab carrying River Road over Mill Brook in Litchfield County, Connecticut. It was built in 1987, so it is 38 years old, younger 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 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 265 vehicles a day, roughly 2% of them trucks, projected to reach 394 by 2044. The structure is 26 ft (7.9 m) long and 15 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesRiver Road
CrossesMill Brook
LocationJCT RTE 128 & River RD #1
RouteCity Street 0
Coordinates41.87171, -73.36196
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2024)
Projected traffic394 by 2044
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 River Road over Mill Brook built?

It was built in 1987, making it 38 years old in 2025.

What condition is River Road over 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 December 2024.

How much traffic does River Road over Mill Brook carry?

About 265 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is River Road over Mill Brook?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 15 ft wide.

Who owns River Road over Mill Brook?

It is owned by the Town or Township Highway Agency.