US Bridges

CR-846 over Drainage Canal

Good

Collier County, Florida · 4.5 Miles E of SR-29 · Structure no. 034833

Built
2024
1 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
115 ft
3 main spans
Daily traffic
3,200
2024 count
Owner
County
County Highway Agency

About this bridge

CR-846 over Drainage Canal is a prestressed concrete slab carrying CR-846 over Drainage Canal in Collier County, Florida. It was built in 2024, so it is 1 years old, younger than the Florida average of 41.3 years.

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

It carries about 3,200 vehicles a day, roughly 10% of them trucks, projected to reach 3,840 by 2044. The structure is 115 ft (35.1 m) long and 43 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

Location

Open in Google Maps
CarriesCR-846
CrossesDrainage Canal
Location4.5 Miles E of SR-29
RouteCounty Highway 846
CountyCollier County
StateFlorida
Coordinates26.41883, -81.33944
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.6 US tons
Inventory rating62.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length115 ft (35.1 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2024)
Projected traffic3,840 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed17.4 mi (28 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR-846 over Drainage Canal built?

It was built in 2024, making it 1 years old in 2025.

What condition is CR-846 over Drainage Canal 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 July 2024.

How much traffic does CR-846 over Drainage Canal carry?

About 3,200 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is CR-846 over Drainage Canal?

The structure is 115 ft (35.1 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns CR-846 over Drainage Canal?

It is owned by the County Highway Agency.