US Bridges

Jewella NB over Airport Ditch

Fair

Caddo Parish, Louisiana · 0.2 Mi. So.Of LA 511 · Structure no. 040932263934781

Built
1972
53 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
20,178
1979 count
Owner
City
City or Municipal Highway Agency

About this bridge

Jewella NB over Airport Ditch is a concrete slab carrying Jewella NB over Airport Ditch in Caddo Parish, Louisiana. It was built in 1972, so it is 53 years old, older 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 5 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 20,178 vehicles a day, projected to reach 22,195 by 1999. The structure is 100 ft (30.5 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesJewella NB
CrossesAirport Ditch
Location0.2 Mi. So.Of LA 511
RouteCounty Highway 0
CountyCaddo Parish
StateLouisiana
Coordinates32.43852, -93.79727
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,178 (1979)
Projected traffic22,195 by 1999
Trucks—
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$348,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jewella NB over Airport Ditch built?

It was built in 1972, making it 53 years old in 2025.

What condition is Jewella NB over Airport Ditch 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 Jewella NB over Airport Ditch carry?

About 20,178 vehicles per day (1979 count).

How long is Jewella NB over Airport Ditch?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 36 ft wide.

Who owns Jewella NB over Airport Ditch?

It is owned by the City or Municipal Highway Agency.