US Bridges

Thompson RD over Big Run

Fair

Marion County, Indiana · 00.60 W of Franklin RD · Structure no. 4900392

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
62 ft
3 main spans
Daily traffic
9,573
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Thompson RD over Big Run is a concrete continuous slab carrying Thompson RD over Big Run in Marion County, Indiana. It was built in 1964, so it is 61 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 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 9,573 vehicles a day, roughly 5% of them trucks, projected to reach 14,226 by 2039. The structure is 62 ft (18.8 m) long and 36 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesThompson RD
CrossesBig Run
Location00.60 W of Franklin RD
RouteCity Street 0
CountyMarion County
StateIndiana
Coordinates39.69579, -86.02943
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length62 ft (18.8 m)
Longest span24 ft (7.3 m)
Deck width36 ft (10.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,573 (2019)
Projected traffic14,226 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Thompson RD over Big Run built?

It was built in 1964, making it 61 years old in 2025.

What condition is Thompson RD over Big Run 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 2024.

How much traffic does Thompson RD over Big Run carry?

About 9,573 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Thompson RD over Big Run?

The structure is 62 ft (18.8 m) long with a longest span of 24 ft (7.3 m) and a deck 36 ft wide.

Who owns Thompson RD over Big Run?

It is owned by the City or Municipal Highway Agency.