US Bridges

US 231 over Branch Slate Creek

Fair

Martin County, Indiana · 02.64 N SR 56 · Structure no. 029383

Built
1986
39 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
84 ft
3 main spans
Daily traffic
6,334
2004 count
Owner
State
State Highway Agency

About this bridge

US 231 over Branch Slate Creek is a concrete continuous slab carrying US 231 over Branch Slate Creek in Martin County, Indiana. It was built in 1986, so it is 39 years old, younger 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 6,334 vehicles a day, roughly 10% of them trucks, projected to reach 8,773 by 2030. The structure is 84 ft (25.6 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 231
CrossesBranch Slate Creek
Location02.64 N SR 56
RouteU.S. Route 231
CountyMartin County
StateIndiana
Coordinates38.51907, -86.90531
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span33 ft (10 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,334 (2004)
Projected traffic8,773 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 231 over Branch Slate Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is US 231 over Branch Slate 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 November 2023.

How much traffic does US 231 over Branch Slate Creek carry?

About 6,334 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is US 231 over Branch Slate Creek?

The structure is 84 ft (25.6 m) long with a longest span of 33 ft (10 m) and a deck 47 ft wide.

Who owns US 231 over Branch Slate Creek?

It is owned by the State Highway Agency.