US Bridges

Rains School RD over Black Bayou Trib

Fair

Caddo Parish, Louisiana · 0.3M SE of LA 170 · Structure no. 040932472935431

Built
1993
32 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
57
2019 count
Owner
County
County Highway Agency

About this bridge

Rains School RD over Black Bayou Trib is a concrete slab carrying Rains School RD over Black Bayou Trib in Caddo Parish, Louisiana. It was built in 1993, so it is 32 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 57 vehicles a day, projected to reach 62 by 2039. The structure is 57 ft (17.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRains School RD
CrossesBlack Bayou Trib
Location0.3M SE of LA 170
RouteCounty Highway 0
CountyCaddo Parish
StateLouisiana
Coordinates32.80909, -93.89658
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.6 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57 (2019)
Projected traffic62 by 2039
Trucks—
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 Rains School RD over Black Bayou Trib built?

It was built in 1993, making it 32 years old in 2025.

What condition is Rains School RD over Black Bayou Trib in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Rains School RD over Black Bayou Trib carry?

About 57 vehicles per day (2019 count).

How long is Rains School RD over Black Bayou Trib?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Rains School RD over Black Bayou Trib?

It is owned by the County Highway Agency.