US Bridges

Nelson Road SB over Frontier Canal

Good

Lee County, Florida · 0.5MI N of Diplomat Pkwy · Structure no. 125677

Built
1974
51 years old
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
66 ft
3 main spans
Daily traffic
2,550
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nelson Road SB over Frontier Canal is a prestressed concrete slab carrying Nelson Road SB over Frontier 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 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 2,550 vehicles a day, roughly 5% of them trucks, projected to reach 4,462 by 2042. The structure is 66 ft (20.1 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesNelson Road SB
CrossesFrontier Canal
Location0.5MI N of Diplomat Pkwy
RouteCity Street 0
StateFlorida
Coordinates26.68941, -81.99033
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.4 US tons
Inventory rating33.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span22 ft (6.7 m)
Deck width35 ft (10.7 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2023)
Projected traffic4,462 by 2042
Trucks5%
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 Nelson Road SB over Frontier Canal built?

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

What condition is Nelson Road SB over Frontier 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 December 2023.

How much traffic does Nelson Road SB over Frontier Canal carry?

About 2,550 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Nelson Road SB over Frontier Canal?

The structure is 66 ft (20.1 m) long with a longest span of 22 ft (6.7 m) and a deck 35 ft wide.

Who owns Nelson Road SB over Frontier Canal?

It is owned by the City or Municipal Highway Agency.