US Bridges

Lawrence Road over Black Lake Bayou Trib.

FairPosted for load

Red River Parish, Louisiana · 0.6 Mi. North of LA 155 · Structure no. 044132060931221

Built
1986
39 years old
Condition
Fair
inspected September 2023
Type
Culvert
Steel
Length
42 ft
3 main spans
Daily traffic
59
2020 count
Owner
County
County Highway Agency

About this bridge

Lawrence Road over Black Lake Bayou Trib. is a steel culvert carrying Lawrence Road over Black Lake Bayou Trib. in Red River Parish, Louisiana. It was built in 1986, so it is 39 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. Its operating status is: posted for load restriction.

It carries about 59 vehicles a day, projected to reach 64 by 2040. The structure is 42 ft (12.8 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLawrence Road
CrossesBlack Lake Bayou Trib.
Location0.6 Mi. North of LA 155
RouteCounty Highway 0
CountyRed River Parish
StateLouisiana
Coordinates32.10019, -93.20289
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating20.4 US tons
Inventory rating14.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span12 ft (3.7 m)
Deck width44 ft (13.4 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2020)
Projected traffic64 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Lawrence Road over Black Lake Bayou Trib. built?

It was built in 1986, making it 39 years old in 2025.

What condition is Lawrence Road over Black Lake Bayou Trib. 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 September 2023.

How much traffic does Lawrence Road over Black Lake Bayou Trib. carry?

About 59 vehicles per day (2020 count).

How long is Lawrence Road over Black Lake Bayou Trib.?

The structure is 42 ft (12.8 m) long with a longest span of 12 ft (3.7 m) and a deck 44 ft wide.

Who owns Lawrence Road over Black Lake Bayou Trib.?

It is owned by the County Highway Agency.