US Bridges

NB SR 997 over Canal C-1W

Good

Miami-Dade County, Florida · 1.39 Miles South of SR 94 · Structure no. 871102

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
15,500
2022 count
Owner
State
State Highway Agency

About this bridge

NB SR 997 over Canal C-1W is a prestressed concrete stringer/multi-beam or girder carrying NB SR 997 over Canal C-1W in Miami-Dade County, Florida. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,500 vehicles a day, roughly 14% of them trucks, projected to reach 26,892 by 2044. The structure is 70 ft (21.3 m) long and 56 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesNB SR 997
CrossesCanal C-1W
Location1.39 Miles South of SR 94
RouteState Highway 997
CountyMiami-Dade County
StateFlorida
Coordinates25.66096, -80.48052
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span70 ft (21.3 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2022)
Projected traffic26,892 by 2044
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 NB SR 997 over Canal C-1W built?

It was built in 2017, making it 8 years old in 2025.

What condition is NB SR 997 over Canal C-1W 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 October 2023.

How much traffic does NB SR 997 over Canal C-1W carry?

About 15,500 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is NB SR 997 over Canal C-1W?

The structure is 70 ft (21.3 m) long with a longest span of 70 ft (21.3 m) and a deck 56 ft wide.

Who owns NB SR 997 over Canal C-1W?

It is owned by the State Highway Agency.