US Bridges

SR-29 over Canal 304

Good

Collier County, Florida · 3.5 MI S of CR-846 · Structure no. 030304

Built
1999
26 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
7,800
2024 count
Owner
State
State Highway Agency

About this bridge

SR-29 over Canal 304 is a concrete culvert carrying SR-29 over Canal 304 in Collier County, Florida. It was built in 1999, so it is 26 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 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 7,800 vehicles a day, roughly 15% of them trucks, projected to reach 13,533 by 2044. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 11.8 mi (19 km).

CarriesSR-29
CrossesCanal 304
Location3.5 MI S of CR-846
RouteState Highway 29
StateFlorida
Coordinates26.38911, -81.37603
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length22 ft (6.6 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,800 (2024)
Projected traffic13,533 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR-29 over Canal 304 built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR-29 over Canal 304 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 March 2024.

How much traffic does SR-29 over Canal 304 carry?

About 7,800 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is SR-29 over Canal 304?

The structure is 22 ft (6.6 m) long with a longest span of 11 ft (3.3 m).

Who owns SR-29 over Canal 304?

It is owned by the State Highway Agency.