US Bridges

Firetower RD over I-12

Good

Tangipahoa Parish, Louisiana · I0012 · Structure no. 625304540316761

Built
1975
50 years old
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
267 ft
4 main spans
Daily traffic
5,250
2015 count
Owner
State
State Highway Agency

About this bridge

Firetower RD over I-12 is a prestressed concrete stringer/multi-beam or girder carrying Firetower RD over I-12 in Tangipahoa Parish, Louisiana. It was built in 1975, so it is 50 years old, older 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 5,250 vehicles a day, projected to reach 5,775 by 2035. The structure is 267 ft (81.4 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesFiretower RD
CrossesI-12
LocationI0012
RouteCounty Highway 0
CountyTangipahoa Parish
StateLouisiana
Coordinates30.48096, -90.2778
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length267 ft (81.4 m)
Longest span88 ft (26.8 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic5,250 (2015)
Projected traffic5,775 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed98.8 mi (159 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$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Firetower RD over I-12 built?

It was built in 1975, making it 50 years old in 2025.

What condition is Firetower RD over I-12 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 February 2025.

How much traffic does Firetower RD over I-12 carry?

About 5,250 vehicles per day (2015 count).

How long is Firetower RD over I-12?

The structure is 267 ft (81.4 m) long with a longest span of 88 ft (26.8 m) and a deck 30 ft wide.

Who owns Firetower RD over I-12?

It is owned by the State Highway Agency.