US Bridges

Savoy RD over Black Bayou

Good

Ascension Parish, Louisiana · 2 Mi. NE LA 30 US 61 JCT · Structure no. 610330135905101

Built
2002
23 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
150
2019 count
Owner
County
County Highway Agency

About this bridge

Savoy RD over Black Bayou is a concrete slab carrying Savoy RD over Black Bayou in Ascension Parish, Louisiana. It was built in 2002, so it is 23 years old, younger than the Louisiana average of 43 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 150 vehicles a day, projected to reach 165 by 2039. The structure is 100 ft (30.5 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSavoy RD
CrossesBlack Bayou
Location2 Mi. NE LA 30 US 61 JCT
RouteCounty Highway 0
Coordinates30.23128, -90.8518
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating98 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2019)
Projected traffic165 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Savoy RD over Black Bayou built?

It was built in 2002, making it 23 years old in 2025.

What condition is Savoy RD over Black Bayou 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 January 2023.

How much traffic does Savoy RD over Black Bayou carry?

About 150 vehicles per day (2019 count).

How long is Savoy RD over Black Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Savoy RD over Black Bayou?

It is owned by the County Highway Agency.