I-65

over JACOB BROADWAY GRAY ST

0.5 MI S OF US 31E, Jefferson County, Kentucky

Condition

Poor

Year Built

1960

Daily Traffic

84,001

Length

121 ft

About This Bridge

I-65 carries traffic over JACOB BROADWAY GRAY ST in Jefferson County, Kentucky. Built in 1960, this structure is 66 years old, placing it among the older bridges still in active service. The bridge features steel continuous construction with a stringer/multi-beam or girder design, a combination chosen by engineers to meet the specific requirements of this crossing.

Approximately 84,001 vehicles cross this bridge daily, making it a high-traffic corridor critical to regional transportation. Bridges carrying this volume require enhanced inspection schedules and proactive maintenance programs. Commercial trucks account for 16% of all crossings. This heavy commercial usage significantly impacts structural wear, as a single fully-loaded truck can cause as much deck wear as thousands of passenger vehicles. Transportation planners factor this into maintenance scheduling and budget allocation.

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 121 feet, this structure falls within the typical range requiring standard inspection procedures conducted by certified bridge inspectors.

The construction materials used in this bridge were selected based on engineering requirements, cost considerations, and local conditions at the time of construction.

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.

6

Deck Condition

Satisfactory

5

Superstructure

Fair

4

Substructure

Poor

Channel & Protection

N/A

4

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 substructure rating of 4 reflects significant wear in piers, abutments, or foundations.

For a structure built in 1960, 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

Steel Continuous 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 Built1960
Year Reconstructed1980
MaterialSteel Continuous
Design TypeStringer/Multi-beam or Girder
OwnerState Highway Agency

Dimensions

Total Length121 ft (36.8 m)
Max Span12 ft (3.8 m)
Deck Width11 ft
Deck Area11,819 sq ft

Span dimensions affect structural design choices and load distribution. The deck area of 11,819 sq ft determines surface maintenance scope.

Classification

Route TypeInterstate
Route Number65
Lanes On Bridge6
Lanes Under Bridge9

Status

Toll BridgeNo
Historical SignificancePossibly eligible
Scour CriticalN
Detour Length1 mi (1 km)

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.

84,001

Avg Daily Traffic (2012)

Vehicles per day crossing this bridge

16%

Truck Traffic

Commercial vehicle percentage

92,401

Projected Future ADT

Estimated future demand

This bridge carries approximately 84,001 vehicles per day, translating to roughly 30,660,365 crossings annually. This high volume places significant demands on the structure and necessitates frequent inspections.

Commercial trucks comprise 16% of traffic. Heavy vehicles cause disproportionate wear—a single fully loaded truck can have the impact of thousands of passenger cars on bridge deck surfaces. This high percentage of truck traffic may accelerate deterioration of deck surfaces and structural components.

Traffic projections estimate future volumes of 92,401 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

4.9 tons

Maximum allowable load for special permits

Inventory Rating

2.6 tons

Load level for normal traffic

The operating rating of 4.9 tons represents the absolute maximum load this bridge can carry under controlled conditions with special permits. The inventory rating of 2.6 tons is the safe load limit for everyday traffic without restrictions. These relatively low ratings may result in posted weight limits or route restrictions for heavy vehicles.

5-Year Condition Trend

Stable

Condition has remained relatively stable since 2020

Data: 2020-2024 FHWA National Bridge Inventory

Location

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39.511111, -85.972222

Identification

Structure Number056B00191N
NBI IDKY-056B00191N
State FIPS21
County FIPS111

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.

I-65 over JACOB BROADWAY GRAY ST | Kentucky