US Bridges

Mengel RD over I-20

Fair

Richland Parish, Louisiana · 1.7 MI East of LA 583 · Structure no. 054204510715941

Built
1969
56 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
242 ft
4 main spans
Daily traffic
2,730
2015 count
Owner
State
State Highway Agency

About this bridge

Mengel RD over I-20 is a prestressed concrete stringer/multi-beam or girder carrying Mengel RD over I-20 in Richland Parish, Louisiana. It was built in 1969, so it is 56 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 2,730 vehicles a day, projected to reach 3,003 by 2035. The structure is 242 ft (73.8 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMengel RD
CrossesI-20
Location1.7 MI East of LA 583
RouteCounty Highway 0
CountyRichland Parish
StateLouisiana
Coordinates32.45585, -91.66623
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating73 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length242 ft (73.8 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 traffic2,730 (2015)
Projected traffic3,003 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mengel RD over I-20 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Mengel 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 October 2023.

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

About 2,730 vehicles per day (2015 count).

How long is Mengel RD over I-20?

The structure is 242 ft (73.8 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns Mengel RD over I-20?

It is owned by the State Highway Agency.