US Bridges

Robson RD over Chico Bayou Robson Road

Fair

Caddo Parish, Louisiana · 1.9 Mi. S.W. of LA Hwy. 1 · Structure no. 040932208933981

Built
1984
41 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
97 ft
5 main spans
Daily traffic
97
2019 count
Owner
County
County Highway Agency

About this bridge

Robson RD over Chico Bayou Robson Road is a concrete slab carrying Robson RD over Chico Bayou Robson Road in Caddo Parish, Louisiana. It was built in 1984, so it is 41 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 97 vehicles a day, projected to reach 106 by 2039. The structure is 97 ft (29.6 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRobson RD
CrossesChico Bayou Robson Road
Location1.9 Mi. S.W. of LA Hwy. 1
RouteCounty Highway 0
CountyCaddo Parish
StateLouisiana
Coordinates32.34659, -93.66437
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97 (2019)
Projected traffic106 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Robson RD over Chico Bayou Robson Road built?

It was built in 1984, making it 41 years old in 2025.

What condition is Robson RD over Chico Bayou Robson Road 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 Robson RD over Chico Bayou Robson Road carry?

About 97 vehicles per day (2019 count).

How long is Robson RD over Chico Bayou Robson Road?

The structure is 97 ft (29.6 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Robson RD over Chico Bayou Robson Road?

It is owned by the County Highway Agency.