US Bridges

Dixie Ranch Rd. over I-12

PoorClosed to traffic

St. Tammany Parish, Louisiana · 4.2 M E of LA 434 · Structure no. 625204540425531

Built
1972
53 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
322 ft
4 main spans
Daily traffic
4,450
2015 count
Owner
State
State Highway Agency

About this bridge

Dixie Ranch Rd. over I-12 is a steel continuous stringer/multi-beam or girder carrying Dixie Ranch Rd. over I-12 in St. Tammany Parish, Louisiana. It was built in 1972, so it is 53 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 4,450 vehicles a day, projected to reach 4,895 by 2035. The structure is 322 ft (98.1 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesDixie Ranch Rd.
CrossesI-12
Location4.2 M E of LA 434
RouteCounty Highway 0
CountySt. Tammany Parish
StateLouisiana
Coordinates30.32392, -89.8572
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourBridge not over waterway
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length322 ft (98.1 m)
Longest span107 ft (32.6 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,450 (2015)
Projected traffic4,895 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Dixie Ranch Rd. over I-12 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Dixie Ranch Rd. over I-12 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Dixie Ranch Rd. over I-12 carry?

About 4,450 vehicles per day (2015 count).

How long is Dixie Ranch Rd. over I-12?

The structure is 322 ft (98.1 m) long with a longest span of 107 ft (32.6 m) and a deck 29 ft wide.

Who owns Dixie Ranch Rd. over I-12?

It is owned by the State Highway Agency.