I-70 EB ON RAMP

over I-70 I-70 CDs

03.25 W I-465, Marion County, Indiana

Condition

Good

Year Built

2005

Daily Traffic

12,000

Length

82 ft

About This Bridge

I-70 EB ON RAMP carries traffic over I-70 I-70 CDs in Marion County, Indiana. Built in 2005, this structure is 21 years old, representing modern engineering and construction standards. The bridge features prestressed concrete continuous construction with a segmental box girder design, a combination chosen by engineers to meet the specific requirements of this crossing.

Approximately 12,000 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. Commercial trucks account for 10% of all crossings. This proportion of commercial traffic is typical for this roadway classification and is factored into the bridge's design load ratings.

The bridge is currently rated in good condition based on federal inspection criteria established by the Federal Highway Administration. The structure meets current safety standards for its designated use and load capacity. With a total length of 82 feet, this is a shorter span typical of local road crossings, often carrying traffic over small streams, drainage channels, or other roadways.

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

7

Deck Condition

Good

7

Superstructure

Good

7

Substructure

Good

Channel & Protection

N/A

7

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.

With a lowest rating of 7, this bridge demonstrates good condition meeting all safety standards.

For a structure built in 2005, maintaining good condition demonstrates effective maintenance practices.

Bridge Details

Prestressed Concrete Continuous is the primary structural material, which influences maintenance requirements and expected lifespan. The segmental box 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 Built2005
MaterialPrestressed Concrete Continuous
Design TypeSegmental Box Girder
OwnerState Highway Agency

Dimensions

Total Length82 ft (25.0 m)
Max Span22 ft (6.8 m)
Deck Width5 ft
Deck Area4,052 sq ft

Span dimensions affect structural design choices and load distribution. The deck area of 4,052 sq ft determines surface maintenance scope.

Classification

Route TypeInterstate
Route Number7
Lanes On Bridge2
Lanes Under Bridge10

Status

Toll BridgeNo
Historical SignificanceNot eligible
Scour CriticalN
Detour Length3 mi (5 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.

12,000

Avg Daily Traffic (2005)

Vehicles per day crossing this bridge

10%

Truck Traffic

Commercial vehicle percentage

14,500

Projected Future ADT

Estimated future demand

This bridge carries approximately 12,000 vehicles per day, translating to roughly 4,380,000 crossings annually. This moderate traffic level is typical for regional connectors.

Commercial trucks comprise 10% 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.

Traffic projections estimate future volumes of 14,500 vehicles daily, a 21% 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

5.6 tons

Maximum allowable load for special permits

Inventory Rating

3.1 tons

Load level for normal traffic

The operating rating of 5.6 tons represents the absolute maximum load this bridge can carry under controlled conditions with special permits. The inventory rating of 3.1 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

Declining

Condition has declined by 1.0 rating points since 2020

Data: 2020-2024 FHWA National Bridge Inventory

Location

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40.500833, -87.863056

Identification

Structure Number041972
NBI IDIN-041972
State FIPS18
County FIPS097

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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-70 EB ON RAMP over I-70 I-70 CDs | Indiana