US Bridges

US 421 over Branch Sugar Creek

Good

Carroll County, Indiana · 03.27 S SR 18 S JCT · Structure no. 032260

Built
1997
28 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
63 ft
3 main spans
Daily traffic
2,096
2004 count
Owner
State
State Highway Agency

About this bridge

US 421 over Branch Sugar Creek is a concrete continuous slab carrying US 421 over Branch Sugar Creek in Carroll County, Indiana. It was built in 1997, so it is 28 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,096 vehicles a day, roughly 26% of them trucks, projected to reach 2,903 by 2030. The structure is 63 ft (19.2 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 421
CrossesBranch Sugar Creek
Location03.27 S SR 18 S JCT
RouteU.S. Route 421
StateIndiana
Coordinates40.50103, -86.63872
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span24 ft (7.3 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,096 (2004)
Projected traffic2,903 by 2030
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Branch Sugar Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is US 421 over Branch Sugar Creek 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 May 2023.

How much traffic does US 421 over Branch Sugar Creek carry?

About 2,096 vehicles per day (2004 count), of which roughly 26% are trucks.

How long is US 421 over Branch Sugar Creek?

The structure is 63 ft (19.2 m) long with a longest span of 24 ft (7.3 m) and a deck 44 ft wide.

Who owns US 421 over Branch Sugar Creek?

It is owned by the State Highway Agency.