US Bridges

Sondheimer Loop RD over Frog Creek

Fair

East Carroll Parish, Louisiana · 3.1 MI S of LA 580 · Structure no. 051832342911461

Built
1997
28 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
150
1979 count
Owner
County
County Highway Agency

About this bridge

Sondheimer Loop RD over Frog Creek is a concrete slab carrying Sondheimer Loop RD over Frog Creek in East Carroll Parish, Louisiana. It was built in 1997, so it is 28 years old, younger than the Louisiana average of 43 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 150 vehicles a day, projected to reach 165 by 1999. The structure is 80 ft (24.4 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSondheimer Loop RD
CrossesFrog Creek
Location3.1 MI S of LA 580
RouteCounty Highway 0
CountyEast Carroll Parish
StateLouisiana
Coordinates32.56885, -91.24358
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (1979)
Projected traffic165 by 1999
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sondheimer Loop RD over Frog Creek built?

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

What condition is Sondheimer Loop RD over Frog 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 March 2023.

How much traffic does Sondheimer Loop RD over Frog Creek carry?

About 150 vehicles per day (1979 count).

How long is Sondheimer Loop RD over Frog Creek?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns Sondheimer Loop RD over Frog Creek?

It is owned by the County Highway Agency.