US Bridges

Diplomat Pkwy WB over Zanzabar Canal

FairPosted for load

Lee County, Florida · 0.15 MI W/O Nelson RD · Structure no. 125578

Built
1974
51 years old
Condition
Fair
inspected December 2023
Type
Slab
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
6,720
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Diplomat Pkwy WB over Zanzabar Canal is a prestressed concrete slab carrying Diplomat Pkwy WB over Zanzabar Canal in Lee County, Florida. It was built in 1974, so it is 51 years old, older than the Florida average of 41.3 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 6,720 vehicles a day, roughly 2% of them trucks, projected to reach 8,400 by 2042. The structure is 24 ft (7.3 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesDiplomat Pkwy WB
CrossesZanzabar Canal
Location0.15 MI W/O Nelson RD
RouteCity Street 0
CountyLee County
StateFlorida
Coordinates26.68224, -81.993
Functional classUrban Collector

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 protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.8 US tons
Inventory rating33.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width36 ft (10.9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,720 (2023)
Projected traffic8,400 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Diplomat Pkwy WB over Zanzabar Canal built?

It was built in 1974, making it 51 years old in 2025.

What condition is Diplomat Pkwy WB over Zanzabar Canal 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 2023.

How much traffic does Diplomat Pkwy WB over Zanzabar Canal carry?

About 6,720 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Diplomat Pkwy WB over Zanzabar Canal?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 36 ft wide.

Who owns Diplomat Pkwy WB over Zanzabar Canal?

It is owned by the City or Municipal Highway Agency.