US Bridges

US 421 over Little Graham Creek

Fair

Ripley County, Indiana · 04.49 S SR 129 · Structure no. 032020

Built
1931
94 years old, rebuilt 1968
Condition
Fair
inspected January 2024
Type
Arch - Deck
Concrete
Length
33 ft
1 main span
Daily traffic
3,498
2004 count
Owner
State
State Highway Agency

About this bridge

US 421 over Little Graham Creek is a concrete arch - deck carrying US 421 over Little Graham Creek in Ripley County, Indiana. It was built in 1931 and reconstructed in 1968, so it is 94 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 3,498 vehicles a day, roughly 10% of them trucks, projected to reach 4,905 by 2033. The structure is 33 ft (10 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 421
CrossesLittle Graham Creek
Location04.49 S SR 129
RouteU.S. Route 421
CountyRipley County
StateIndiana
Coordinates39.00266, -85.28904
Functional classRural 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length33 ft (10 m)
Longest span30 ft (9.1 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,498 (2004)
Projected traffic4,905 by 2033
Trucks10%
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 Little Graham Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1968.

What condition is US 421 over Little Graham Creek 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 January 2024.

How much traffic does US 421 over Little Graham Creek carry?

About 3,498 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is US 421 over Little Graham Creek?

The structure is 33 ft (10 m) long with a longest span of 30 ft (9.1 m) and a deck 46 ft wide.

Who owns US 421 over Little Graham Creek?

It is owned by the State Highway Agency.