US Bridges

71st Street North over Bonn Creek

Good

Pinellas County, Florida · 250FT N of 54th Ave N · Structure no. 154398

Built
1995
30 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
57 ft
3 main spans
Daily traffic
14,300
2023 count
Owner
County
County Highway Agency

About this bridge

71st Street North over Bonn Creek is a concrete culvert carrying 71st Street North over Bonn Creek in Pinellas County, Florida. It was built in 1995, so it is 30 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 14,300 vehicles a day, roughly 4% of them trucks, projected to reach 24,811 by 2042. The structure is 57 ft (17.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Carries71st Street North
CrossesBonn Creek
Location250FT N of 54th Ave N
RouteCity Street 0
StateFlorida
Coordinates27.82198, -82.73675
Functional classUrban Minor Arterial

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.2 US tons
Inventory rating48.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length57 ft (17.5 m)
Longest span19 ft (5.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,300 (2023)
Projected traffic24,811 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 71st Street North over Bonn Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is 71st Street North over Bonn Creek 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 November 2023.

How much traffic does 71st Street North over Bonn Creek carry?

About 14,300 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is 71st Street North over Bonn Creek?

The structure is 57 ft (17.5 m) long with a longest span of 19 ft (5.7 m).

Who owns 71st Street North over Bonn Creek?

It is owned by the County Highway Agency.