US Bridges

Thompson Road over I-74

Fair

Marion County, Indiana · 04.01 E I-465 · Structure no. 044620

Built
1958
67 years old, rebuilt 2002
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
252 ft
4 main spans
Daily traffic
2,106
2004 count
Owner
State
State Highway Agency

About this bridge

Thompson Road over I-74 is a concrete continuous stringer/multi-beam or girder carrying Thompson Road over I-74 in Marion County, Indiana. It was built in 1958 and reconstructed in 2002, so it is 67 years old, older than the Indiana average of 46.6 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 2,106 vehicles a day, roughly 5% of them trucks, projected to reach 3,000 by 2030. The structure is 252 ft (76.7 m) long and 30 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesThompson Road
CrossesI-74
Location04.01 E I-465
RouteCity Street 0
CountyMarion County
StateIndiana
Coordinates39.69655, -85.99052
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.1 US tons
Inventory rating34.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length252 ft (76.7 m)
Longest span76 ft (23.2 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,106 (2004)
Projected traffic3,000 by 2030
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Thompson Road over I-74 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2002.

What condition is Thompson Road over I-74 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 July 2023.

How much traffic does Thompson Road over I-74 carry?

About 2,106 vehicles per day (2004 count), of which roughly 5% are trucks.

How long is Thompson Road over I-74?

The structure is 252 ft (76.7 m) long with a longest span of 76 ft (23.2 m) and a deck 30 ft wide.

Who owns Thompson Road over I-74?

It is owned by the State Highway Agency.