US Bridges

Sylvarena Road over Relief for Bayou Pierre

Fair

Copiah County, Mississippi · Sec 24 T 9N R 7E B · Structure no. SA1500000000099

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
95 ft
5 main spans
Daily traffic
1,200
2015 count
Owner
County
County Highway Agency

About this bridge

Sylvarena Road over Relief for Bayou Pierre is a concrete channel beam carrying Sylvarena Road over Relief for Bayou Pierre in Copiah County, Mississippi. It was built in 1978, so it is 47 years old, older 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 1,200 vehicles a day, roughly 8% of them trucks, projected to reach 2,100 by 2045. The structure is 95 ft (29 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSylvarena Road
CrossesRelief for Bayou Pierre
LocationSec 24 T 9N R 7E B
RouteCounty Highway 318
CountyCopiah County
StateMississippi
Coordinates31.73453, -90.45797
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating28 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadH 15
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2015)
Projected traffic2,100 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed11.2 mi (18 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$285,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sylvarena Road over Relief for Bayou Pierre built?

It was built in 1978, making it 47 years old in 2025.

What condition is Sylvarena Road over Relief for Bayou Pierre 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 March 2023.

How much traffic does Sylvarena Road over Relief for Bayou Pierre carry?

About 1,200 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Sylvarena Road over Relief for Bayou Pierre?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Sylvarena Road over Relief for Bayou Pierre?

It is owned by the County Highway Agency.