US Bridges

Knapp RD over Wildcat Run

Fair

Marion County, Indiana · 00.15 S of Mcgregor RD · Structure no. 4900450

Built
1968
57 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
61 ft
3 main spans
Daily traffic
233
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Knapp RD over Wildcat Run is a concrete continuous slab carrying Knapp RD over Wildcat Run in Marion County, Indiana. It was built in 1968, so it is 57 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 233 vehicles a day, roughly 5% of them trucks, projected to reach 350 by 2039. The structure is 61 ft (18.7 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesKnapp RD
CrossesWildcat Run
Location00.15 S of Mcgregor RD
RouteCity Street 125
CountyMarion County
StateIndiana
Coordinates39.65771, -86.009
Functional classUrban Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length61 ft (18.7 m)
Longest span24 ft (7.3 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic233 (2019)
Projected traffic350 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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$618,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Knapp RD over Wildcat Run built?

It was built in 1968, making it 57 years old in 2025.

What condition is Knapp RD over Wildcat 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 Knapp RD over Wildcat Run carry?

About 233 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Knapp RD over Wildcat Run?

The structure is 61 ft (18.7 m) long with a longest span of 24 ft (7.3 m) and a deck 30 ft wide.

Who owns Knapp RD over Wildcat Run?

It is owned by the City or Municipal Highway Agency.