US Bridges

W. 19th Ave over Mile Branch

Good

St. Tammany Parish, Louisiana · 0.4 Mile East of Johnson · Structure no. 625230288900661

Built
1990
35 years old
Condition
Good
inspected January 2025
Type
Culvert
Steel
Length
35 ft
3 main spans
Daily traffic
300
1989 count
Owner
City
City or Municipal Highway Agency

About this bridge

W. 19th Ave over Mile Branch is a steel culvert carrying W. 19th Ave over Mile Branch in St. Tammany Parish, Louisiana. It was built in 1990, so it is 35 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 300 vehicles a day, projected to reach 330 by 2009. The structure is 35 ft (10.7 m) long and 55 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesW. 19th Ave
CrossesMile Branch
Location0.4 Mile East of Johnson
RouteCounty Highway 0
CountySt. Tammany Parish
StateLouisiana
Coordinates30.47804, -90.10986
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
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 rating34.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span10 ft (3 m)
Deck width55 ft (16.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (1989)
Projected traffic330 by 2009
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W. 19th Ave over Mile Branch built?

It was built in 1990, making it 35 years old in 2025.

What condition is W. 19th Ave over Mile Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does W. 19th Ave over Mile Branch carry?

About 300 vehicles per day (1989 count).

How long is W. 19th Ave over Mile Branch?

The structure is 35 ft (10.7 m) long with a longest span of 10 ft (3 m) and a deck 55 ft wide.

Who owns W. 19th Ave over Mile Branch?

It is owned by the City or Municipal Highway Agency.