US Bridges

Sibley Road over Branch

PoorPosted for load

Tangipahoa Parish, Louisiana · 1.5 Miles S/W of LA 442 · Structure no. 625330335903281

Built
1960
65 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
38 ft
2 main spans
Daily traffic
204
2020 count
Owner
County
County Highway Agency

About this bridge

Sibley Road over Branch is a wood or timber stringer/multi-beam or girder carrying Sibley Road over Branch in Tangipahoa Parish, Louisiana. It was built in 1960, so it is 65 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 204 vehicles a day, projected to reach 224 by 2040. The structure is 38 ft (11.6 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSibley Road
CrossesBranch
Location1.5 Miles S/W of LA 442
RouteCounty Highway 0
CountyTangipahoa Parish
StateLouisiana
Coordinates30.55911, -90.54703
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating18.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 10
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic204 (2020)
Projected traffic224 by 2040
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$160,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sibley Road over Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Sibley Road over Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Sibley Road over Branch carry?

About 204 vehicles per day (2020 count).

How long is Sibley Road over Branch?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.

Who owns Sibley Road over Branch?

It is owned by the County Highway Agency.