US Bridges

Mt Zion over Brush Bayou

Fair

Caddo Parish, Louisiana · 2.1 MI East of US 171 · Structure no. 040932251934511

Built
1988
37 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
22 ft
3 main spans
Daily traffic
6,960
1979 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mt Zion over Brush Bayou is a concrete culvert carrying Mt Zion over Brush Bayou in Caddo Parish, Louisiana. It was built in 1988, so it is 37 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 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 6,960 vehicles a day, projected to reach 7,656 by 1999. The structure is 22 ft (6.7 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMt Zion
CrossesBrush Bayou
Location2.1 MI East of US 171
RouteCity Street 0
CountyCaddo Parish
StateLouisiana
Coordinates32.4175, -93.75217
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span6 ft (1.8 m)
Deck width85 ft (25.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,960 (1979)
Projected traffic7,656 by 1999
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Zion over Brush Bayou built?

It was built in 1988, making it 37 years old in 2025.

What condition is Mt Zion 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 over Brush Bayou carry?

About 6,960 vehicles per day (1979 count).

How long is Mt Zion over Brush Bayou?

The structure is 22 ft (6.7 m) long with a longest span of 6 ft (1.8 m) and a deck 85 ft wide.

Who owns Mt Zion over Brush Bayou?

It is owned by the City or Municipal Highway Agency.