US Bridges

Hypolite Miller RD over Bayou Bourbeux

FairPosted for load

St. Landry Parish, Louisiana · 0.43 MI S of LA 754 · Structure no. 034930242920751

Built
1978
47 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
400
2020 count
Owner
County
County Highway Agency

About this bridge

Hypolite Miller RD over Bayou Bourbeux is a concrete slab carrying Hypolite Miller RD over Bayou Bourbeux in St. Landry Parish, Louisiana. It was built in 1978, so it is 47 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. Its operating status is: posted for load restriction.

It carries about 400 vehicles a day, projected to reach 440 by 2040. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesHypolite Miller RD
CrossesBayou Bourbeux
Location0.43 MI S of LA 754
RouteCounty Highway 0
CountySt. Landry Parish
StateLouisiana
Coordinates30.40102, -92.12496
Functional classRural 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.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.7 US tons
Inventory rating16.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2020)
Projected traffic440 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hypolite Miller RD over Bayou Bourbeux built?

It was built in 1978, making it 47 years old in 2025.

What condition is Hypolite Miller RD over Bayou Bourbeux 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 January 2023.

How much traffic does Hypolite Miller RD over Bayou Bourbeux carry?

About 400 vehicles per day (2020 count).

How long is Hypolite Miller RD over Bayou Bourbeux?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Hypolite Miller RD over Bayou Bourbeux?

It is owned by the County Highway Agency.