US Bridges

Montgomery Xing over Prairie Bayou

Fair

Webster Parish, Louisiana · 0.6 MI W of HWY 163 · Structure no. 046032289932471

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
36 ft
4 main spans
Daily traffic
281
2020 count
Owner
County
County Highway Agency

About this bridge

Montgomery Xing over Prairie Bayou is a concrete culvert carrying Montgomery Xing over Prairie Bayou in Webster Parish, Louisiana. It was built in 1959, so it is 66 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 281 vehicles a day, projected to reach 309 by 2040. The structure is 36 ft (11 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMontgomery Xing
CrossesPrairie Bayou
Location0.6 MI W of HWY 163
RouteCounty Highway 0
CountyWebster Parish
StateLouisiana
Coordinates32.4823, -93.41237
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length36 ft (11 m)
Longest span9 ft (2.7 m)
Deck width40 ft (12.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic281 (2020)
Projected traffic309 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Montgomery Xing over Prairie Bayou built?

It was built in 1959, making it 66 years old in 2025.

What condition is Montgomery Xing over Prairie Bayou 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 July 2023.

How much traffic does Montgomery Xing over Prairie Bayou carry?

About 281 vehicles per day (2020 count).

How long is Montgomery Xing over Prairie Bayou?

The structure is 36 ft (11 m) long with a longest span of 9 ft (2.7 m) and a deck 40 ft wide.

Who owns Montgomery Xing over Prairie Bayou?

It is owned by the County Highway Agency.