US Bridges

Three Mile Lake RD over Browns Bayou

Poor

Sunflower County, Mississippi · Sec 4 T17N R 3W B · Structure no. SA6700000000003

Built
2001
24 years old
Condition
Poor
inspected August 2024
Type
Slab
Concrete
Length
38 ft
2 main spans
Daily traffic
270
2024 count
Owner
County
County Highway Agency

About this bridge

Three Mile Lake RD over Browns Bayou is a concrete slab carrying Three Mile Lake RD over Browns Bayou in Sunflower County, Mississippi. It was built in 2001, so it is 24 years old, younger 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 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: open, temporary structure in place while original is closed.

It carries about 270 vehicles a day, roughly 8% of them trucks, projected to reach 405 by 2044. The structure is 38 ft (11.6 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesThree Mile Lake RD
CrossesBrowns Bayou
LocationSec 4 T17N R 3W B
RouteCounty Highway 1617
Coordinates33.36203, -90.51434
Functional classRural Major Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2024)
Projected traffic405 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$450,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Three Mile Lake RD over Browns Bayou built?

It was built in 2001, making it 24 years old in 2025.

What condition is Three Mile Lake RD over Browns 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 August 2024.

How much traffic does Three Mile Lake RD over Browns Bayou carry?

About 270 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Three Mile Lake RD over Browns Bayou?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns Three Mile Lake RD over Browns Bayou?

It is owned by the County Highway Agency.