US Bridges

Riga Blvd over Six Mile Creek

Good

Hillsborough County, Florida · 0.2MI S of Mlk Jr Blvd · Structure no. 104126

Built
1978
47 years old
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
56 ft
2 main spans
Daily traffic
1,641
2023 count
Owner
County
County Highway Agency

About this bridge

Riga Blvd over Six Mile Creek is a prestressed concrete slab carrying Riga Blvd over Six Mile Creek in Hillsborough County, Florida. It was built in 1978, so it is 47 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 1,641 vehicles a day, roughly 2% of them trucks, projected to reach 2,051 by 2042. The structure is 56 ft (17 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRiga Blvd
CrossesSix Mile Creek
Location0.2MI S of Mlk Jr Blvd
RouteCounty Highway 0
StateFlorida
Coordinates27.97793, -82.34685
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
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating42.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length56 ft (17 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,641 (2023)
Projected traffic2,051 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Riga Blvd over Six Mile Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Riga Blvd over Six Mile 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 December 2023.

How much traffic does Riga Blvd over Six Mile Creek carry?

About 1,641 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Riga Blvd over Six Mile Creek?

The structure is 56 ft (17 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns Riga Blvd over Six Mile Creek?

It is owned by the County Highway Agency.