US Bridges

Mt Zion RD over Brush Bayou

Fair

Caddo Parish, Louisiana · 0.6 MI West of Linwood Av · Structure no. 040932248934642

Built
1979
46 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
220 ft
11 main spans
Daily traffic
2,828
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mt Zion RD over Brush Bayou is a concrete slab carrying Mt Zion RD over Brush Bayou in Caddo Parish, Louisiana. It was built in 1979, so it is 46 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 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 2,828 vehicles a day, roughly 14% of them trucks, projected to reach 3,110 by 2044. The structure is 220 ft (67.1 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMt Zion RD
CrossesBrush Bayou
Location0.6 MI West of Linwood Av
RouteCity Street 0
CountyCaddo Parish
StateLouisiana
Coordinates32.41304, -93.77379
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
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
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span20 ft (6.1 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,828 (2024)
Projected traffic3,110 by 2044
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$684,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Zion RD over Brush Bayou built?

It was built in 1979, making it 46 years old in 2025.

What condition is Mt Zion RD over Brush 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 March 2023.

How much traffic does Mt Zion RD over Brush Bayou carry?

About 2,828 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is Mt Zion RD over Brush Bayou?

The structure is 220 ft (67.1 m) long with a longest span of 20 ft (6.1 m) and a deck 36 ft wide.

Who owns Mt Zion RD over Brush Bayou?

It is owned by the City or Municipal Highway Agency.