US Bridges

US 421 over Campbells Run

Good

Clinton County, Indiana · 00.28 S SR 26 · Structure no. 032231

Built
2023
2 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
66 ft
1 main span
Daily traffic
3,497
2021 count
Owner
State
State Highway Agency

About this bridge

US 421 over Campbells Run is a steel stringer/multi-beam or girder carrying US 421 over Campbells Run in Clinton County, Indiana. It was built in 2023, so it is 2 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,497 vehicles a day, roughly 5% of them trucks, projected to reach 4,100 by 2041. The structure is 66 ft (20.2 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS 421
CrossesCampbells Run
Location00.28 S SR 26
RouteU.S. Route 421
CountyClinton County
StateIndiana
Coordinates40.41299, -86.59448
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating68.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length66 ft (20.2 m)
Longest span64 ft (19.5 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,497 (2021)
Projected traffic4,100 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 421 over Campbells Run built?

It was built in 2023, making it 2 years old in 2025.

What condition is US 421 over Campbells Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does US 421 over Campbells Run carry?

About 3,497 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is US 421 over Campbells Run?

The structure is 66 ft (20.2 m) long with a longest span of 64 ft (19.5 m) and a deck 39 ft wide.

Who owns US 421 over Campbells Run?

It is owned by the State Highway Agency.