US Bridges

Adair Road over Pecan Bayou

PoorClosed to traffic

Sunflower County, Mississippi · Sec 36 T21N R 3W · Structure no. SA6700000000104

Built
1972
53 years old
Condition
Poor
inspected February 2024
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

Adair Road over Pecan Bayou is a concrete channel beam carrying Adair Road over Pecan Bayou in Sunflower County, Mississippi. It was built in 1972, so it is 53 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 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: closed to all traffic.

It carries about 30 vehicles a day, roughly 8% of them trucks, projected to reach 45 by 2044. The structure is 57 ft (17.4 m) long and 25 ft wide.

CarriesAdair Road
CrossesPecan Bayou
LocationSec 36 T21N R 3W
RouteCounty Highway 497
Coordinates33.63768, -90.45214
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.
Superstructure7 GoodSome minor problems.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
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 rating0 US tons
Inventory rating0 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic45 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$786,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Adair Road over Pecan Bayou built?

It was built in 1972, making it 53 years old in 2025.

What condition is Adair Road over Pecan Bayou 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 February 2024.

How much traffic does Adair Road over Pecan Bayou carry?

About 30 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Adair Road over Pecan Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns Adair Road over Pecan Bayou?

It is owned by the County Highway Agency.