UNNAMED RD

over I-10

3.1 MI EAST OF I-510, Orleans Parish, Louisiana

Condition

Poor

Year Built

1969

Daily Traffic

28,550

Length

138 ft

About This Bridge

UNNAMED RD carries traffic over I-10 in Orleans Parish, Louisiana. Built in 1969, this structure is 57 years old, placing it among the older bridges still in active service. The bridge features prestressed concrete construction with a stringer/multi-beam or girder design, a combination chosen by engineers to meet the specific requirements of this crossing.

Approximately 28,550 vehicles cross this bridge daily, representing moderate traffic volumes typical of important regional connectors. This level of usage requires regular monitoring to ensure continued safe operation.

The bridge is currently rated in poor condition based on federal inspection criteria established by the Federal Highway Administration. It is classified as structurally deficient, meaning one or more components have received a rating of 4 or below on the 0-9 scale. This designation indicates significant deterioration that warrants attention, though the bridge remains safe for travel within its posted limits. Structurally deficient does not mean unsafe—rather, it signals that repairs or replacement should be prioritized in transportation planning. With a total length of 138 feet, this structure falls within the typical range requiring standard inspection procedures conducted by certified bridge inspectors.

Concrete bridges offer excellent durability and relatively low maintenance requirements. They resist corrosion well but can develop cracking over time, particularly in regions with freeze-thaw cycles or heavy use of deicing chemicals. Regular inspection focuses on detecting cracks, spalling, and reinforcement corrosion.

Federal law requires that all highway bridges be inspected at least every 24 months by qualified inspectors following the National Bridge Inspection Standards (NBIS). Some bridges with known issues or unusual characteristics may be inspected more frequently. Inspection data is reported to the National Bridge Inventory, a database maintained by the Federal Highway Administration that tracks the condition of all public highway bridges in the United States. This bridge data is sourced from that federal database and reflects the most recent available inspection results.

Condition Ratings

Structurally Deficient

This bridge has one or more component ratings of 4 or below, indicating significant deterioration that requires attention. The bridge remains safe for travel but may have load restrictions.

0

Deck Condition

Failed

0

Superstructure

Failed

0

Substructure

Failed

Channel & Protection

N/A

0

Lowest Rating

Determines condition category

NBI condition ratings range from 0 (failed) to 9 (excellent). Ratings of 4 or below are considered poor. The overall condition category is determined by the lowest individual component rating.

The deck rating of 0 indicates critical deterioration requiring immediate attention. The superstructure rating of 0 shows severe structural concerns in load-bearing elements. The substructure rating of 0 reflects critical foundation or pier problems.

For a structure built in 1969, the current condition reflects the cumulative effects of age, traffic, and environmental exposure. High traffic volumes on a bridge in fair or poor condition typically elevate its priority for rehabilitation or replacement in state transportation planning.

Bridge Details

Prestressed Concrete is the primary structural material, which influences maintenance requirements and expected lifespan. The stringer/multi-beam or girder design was selected based on span requirements, load capacity needs, and site conditions at the time of construction. Maintenance responsibility falls to State Highway Agency.

Construction

Year Built1969
MaterialPrestressed Concrete
Design TypeStringer/Multi-beam or Girder
OwnerState Highway Agency

Dimensions

Total Length138 ft (42.0 m)
Max Span10 ft (3.0 m)
Deck Width4 ft
Deck Area5,044 sq ft

Span dimensions affect structural design choices and load distribution. The deck area of 5,044 sq ft determines surface maintenance scope.

Classification

Route TypeCounty Road
Route Number0
Lanes On Bridge2
Lanes Under Bridge6

Status

Toll BridgeNo
Historical SignificanceNot eligible
Scour CriticalN
Detour Length

Traffic Data

Traffic volume data helps engineers assess bridge wear patterns and plan maintenance schedules. Average Daily Traffic (ADT) counts are updated periodically and represent typical weekday usage.

28,550

Avg Daily Traffic (2015)

Vehicles per day crossing this bridge

Truck Traffic

Commercial vehicle percentage

31,405

Projected Future ADT

Estimated future demand

This bridge carries approximately 28,550 vehicles per day, translating to roughly 10,420,750 crossings annually. This moderate traffic level is typical for regional connectors.

Traffic projections estimate future volumes of 31,405 vehicles daily, a 10% increase from current levels. These projections inform capacity planning and potential upgrade requirements.

Load Ratings

Load ratings determine what weight this bridge can safely support. These values are critical for routing heavy vehicles and issuing overweight permits.

Operating Rating

Maximum allowable load for special permits

Inventory Rating

Load level for normal traffic

5-Year Condition Trend

Stable

Condition has remained relatively stable since 2020

Data: 2020-2024 FHWA National Bridge Inventory

Location

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30.828056, -90.778889

Identification

Structure Number023604509019121
NBI IDLA-023604509019121
State FIPS22
County FIPS071

Explore More

Data Source: Federal Highway Administration (FHWA) National Bridge Inventory 2024

Bridge inspection data is typically updated every 24 months. Conditions may have changed since the last inspection.

“Structurally deficient” does not mean a bridge is unsafe or likely to collapse. It indicates that one or more key structural elements are in poor or worse condition. Bridges are inspected regularly and may have load restrictions in place.

This data is for informational purposes only and should not be used for route clearance or vehicle weight decisions.

UNNAMED RD over I-10, Louisiana — Bridge Condition | BridgeReport.org | BridgeReport.org