US Bridges

Jack Martin RD over I 20

Fair

Webster Parish, Louisiana · 3.86 MI E of LA 7 · Structure no. 046004510312901

Built
1983
42 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
330 ft
6 main spans
Daily traffic
2,900
2015 count
Owner
State
State Highway Agency

About this bridge

Jack Martin RD over I 20 is a steel stringer/multi-beam or girder carrying Jack Martin RD over I 20 in Webster Parish, Louisiana. It was built in 1983, so it is 42 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 5 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 2,900 vehicles a day, projected to reach 3,190 by 2035. The structure is 330 ft (100.6 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesJack Martin RD
CrossesI 20
Location3.86 MI E of LA 7
RouteCounty Highway 0
CountyWebster Parish
StateLouisiana
Coordinates32.57581, -93.2275
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length330 ft (100.6 m)
Longest span80 ft (24.4 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2015)
Projected traffic3,190 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 Jack Martin RD over I 20 built?

It was built in 1983, making it 42 years old in 2025.

What condition is Jack Martin 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 2023.

How much traffic does Jack Martin RD over I 20 carry?

About 2,900 vehicles per day (2015 count).

How long is Jack Martin RD over I 20?

The structure is 330 ft (100.6 m) long with a longest span of 80 ft (24.4 m) and a deck 27 ft wide.

Who owns Jack Martin RD over I 20?

It is owned by the State Highway Agency.