US Bridges

US 231 over Dry Branch

Good

Montgomery County, Indiana · 00.44 N SR 32 · Structure no. 016120

Built
1931
94 years old, rebuilt 2004
Condition
Good
inspected April 2023
Type
Arch - Deck
Concrete
Length
33 ft
1 main span
Daily traffic
17,443
2021 count
Owner
State
State Highway Agency

About this bridge

US 231 over Dry Branch is a concrete arch - deck carrying US 231 over Dry Branch in Montgomery County, Indiana. It was built in 1931 and reconstructed in 2004, 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 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 17,443 vehicles a day, roughly 8% of them trucks, projected to reach 27,411 by 2032. The structure is 33 ft (10 m) long and 51 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesUS 231
CrossesDry Branch
Location00.44 N SR 32
RouteU.S. Route 231
StateIndiana
Coordinates40.03133, -86.90142
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating100 US tons
Inventory rating97.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length33 ft (10 m)
Longest span30 ft (9.1 m)
Deck width51 ft (15.6 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,443 (2021)
Projected traffic27,411 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 Dry Branch built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2004.

What condition is US 231 over Dry Branch 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 April 2023.

How much traffic does US 231 over Dry Branch carry?

About 17,443 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is US 231 over Dry Branch?

The structure is 33 ft (10 m) long with a longest span of 30 ft (9.1 m) and a deck 51 ft wide.

Who owns US 231 over Dry Branch?

It is owned by the State Highway Agency.