US Bridges

34th Avenue over Main Relief Canal

Good

Indian River County, Florida · 0.3 Miles North of SR 60 · Structure no. 885813

Built
2017
8 years old
Condition
Good
inspected May 2023
Type
Slab
Prestressed Concrete
Length
105 ft
3 main spans
Daily traffic
4,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

34th Avenue over Main Relief Canal is a prestressed concrete slab carrying 34th Avenue over Main Relief Canal in Indian River 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 4,000 vehicles a day, roughly 2% of them trucks, projected to reach 6,000 by 2042. The structure is 105 ft (32 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries34th Avenue
CrossesMain Relief Canal
Location0.3 Miles North of SR 60
RouteCity Street 0
StateFlorida
Coordinates27.6427, -80.42039
Functional classUrban Local

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.4 US tons
Inventory rating57.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length105 ft (32 m)
Longest span45 ft (13.7 m)
Deck width48 ft (14.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2023)
Projected traffic6,000 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a toll 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 34th Avenue over Main Relief Canal built?

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

What condition is 34th Avenue over Main Relief 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 May 2023.

How much traffic does 34th Avenue over Main Relief Canal carry?

About 4,000 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is 34th Avenue over Main Relief Canal?

The structure is 105 ft (32 m) long with a longest span of 45 ft (13.7 m) and a deck 48 ft wide.

Who owns 34th Avenue over Main Relief Canal?

It is owned by the City or Municipal Highway Agency.