US Bridges

Purdy RD over I-20

Fair

Ouachita Parish, Louisiana · 1.4 MI West of LA 151 · Structure no. 053704510601491

Built
1960
65 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
307 ft
6 main spans
Daily traffic
3,620
2015 count
Owner
State
State Highway Agency

About this bridge

Purdy RD over I-20 is a steel stringer/multi-beam or girder carrying Purdy RD over I-20 in Ouachita Parish, Louisiana. It was built in 1960, so it is 65 years old, older 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 3,620 vehicles a day, projected to reach 3,982 by 2035. The structure is 307 ft (93.6 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPurdy RD
CrossesI-20
Location1.4 MI West of LA 151
RouteCounty Highway 0
CountyOuachita Parish
StateLouisiana
Coordinates32.52131, -92.3897
Functional classRural Local

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.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.8 US tons
Inventory rating29.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length307 ft (93.6 m)
Longest span70 ft (21.3 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,620 (2015)
Projected traffic3,982 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$1.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Purdy RD over I-20 built?

It was built in 1960, making it 65 years old in 2025.

What condition is Purdy RD over I-20 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 September 2024.

How much traffic does Purdy RD over I-20 carry?

About 3,620 vehicles per day (2015 count).

How long is Purdy RD over I-20?

The structure is 307 ft (93.6 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns Purdy RD over I-20?

It is owned by the State Highway Agency.