US Bridges

Fischer Drive over Gum Bayou

Fair

St. Tammany Parish, Louisiana · 0.06 MI East of LA 1090 · Structure no. 625200000620347

Built
1976
49 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
34 ft
5 main spans
Daily traffic
1,000
2018 count
Owner
County
County Highway Agency

About this bridge

Fischer Drive over Gum Bayou is a concrete culvert carrying Fischer Drive over Gum Bayou in St. Tammany Parish, Louisiana. It was built in 1976, so it is 49 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 1,000 vehicles a day, projected to reach 1,100 by 2038. The structure is 34 ft (10.4 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFischer Drive
CrossesGum Bayou
Location0.06 MI East of LA 1090
RouteCounty Highway 0
CountySt. Tammany Parish
StateLouisiana
Coordinates30.32971, -89.73404
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.5 US tons
Inventory rating21.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span5 ft (1.5 m)
Deck width32 ft (9.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2018)
Projected traffic1,100 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fischer Drive over Gum Bayou built?

It was built in 1976, making it 49 years old in 2025.

What condition is Fischer Drive over Gum Bayou 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 February 2025.

How much traffic does Fischer Drive over Gum Bayou carry?

About 1,000 vehicles per day (2018 count).

How long is Fischer Drive over Gum Bayou?

The structure is 34 ft (10.4 m) long with a longest span of 5 ft (1.5 m) and a deck 32 ft wide.

Who owns Fischer Drive over Gum Bayou?

It is owned by the County Highway Agency.