US Bridges

River Road over Guinea Brook

FairPosted for load

Litchfield County, Connecticut · 0.4 MI S. of Route 4 · Structure no. 05362

Built
1986
39 years old
Condition
Fair
inspected April 2023
Type
Slab
Wood or Timber
Length
29 ft
1 main span
Daily traffic
400
2013 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

River Road over Guinea Brook is a wood or timber slab carrying River Road over Guinea Brook in Litchfield County, Connecticut. It was built in 1986, so it is 39 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. Its operating status is: posted for load restriction.

It carries about 400 vehicles a day, roughly 7% of them trucks, projected to reach 594 by 2033. The structure is 29 ft (8.8 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRiver Road
CrossesGuinea Brook
Location0.4 MI S. of Route 4
RouteCity Street 0
CountyLitchfield County
StateConnecticut
Coordinates41.81483, -73.37719
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating32.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2013)
Projected traffic594 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Guinea Brook built?

It was built in 1986, making it 39 years old in 2025.

What condition is River Road over Guinea 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 April 2023.

How much traffic does River Road over Guinea Brook carry?

About 400 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is River Road over Guinea Brook?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns River Road over Guinea Brook?

It is owned by the Town or Township Highway Agency.