US Bridges

Harriston Road over North Fork Coles Creek

Fair

Jefferson County, Mississippi · Sec 33 T 9N R 2E B · Structure no. SA3200000000037

Built
1991
34 years old
Condition
Fair
inspected January 2024
Type
Channel Beam
Concrete
Length
222 ft
5 main spans
Daily traffic
230
2024 count
Owner
County
County Highway Agency

About this bridge

Harriston Road over North Fork Coles Creek is a concrete channel beam carrying Harriston Road over North Fork Coles Creek in Jefferson County, Mississippi. It was built in 1991, so it is 34 years old, younger than the Mississippi average of 38.9 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 230 vehicles a day, roughly 8% of them trucks, projected to reach 445 by 2044. The structure is 222 ft (67.7 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesHarriston Road
CrossesNorth Fork Coles Creek
LocationSec 33 T 9N R 2E B
RouteCounty Highway 304
Coordinates31.74125, -91.01036
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.1 US tons
Inventory rating41.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span80 ft (24.4 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2024)
Projected traffic445 by 2044
Trucks8%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Harriston Road over North Fork Coles Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Harriston Road over North Fork Coles Creek 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 2024.

How much traffic does Harriston Road over North Fork Coles Creek carry?

About 230 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Harriston Road over North Fork Coles Creek?

The structure is 222 ft (67.7 m) long with a longest span of 80 ft (24.4 m) and a deck 31 ft wide.

Who owns Harriston Road over North Fork Coles Creek?

It is owned by the County Highway Agency.