US Bridges

CR 100 over Chambers Creek

FairPosted for load

Alcorn County, Mississippi · Sec 20 T 1S R 9E B · Structure no. SA0200000000030

Built
1980
45 years old
Condition
Fair
inspected August 2024
Type
Channel Beam
Concrete
Length
92 ft
300 main spans
Daily traffic
1,205
2024 count
Owner
County
County Highway Agency

About this bridge

CR 100 over Chambers Creek is a concrete channel beam carrying CR 100 over Chambers Creek in Alcorn County, Mississippi. It was built in 1980, so it is 45 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. Its operating status is: posted for load restriction.

It carries about 1,205 vehicles a day, roughly 8% of them trucks, projected to reach 2,550 by 2043. The structure is 92 ft (28 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCR 100
CrossesChambers Creek
LocationSec 20 T 1S R 9E B
RouteCounty Highway 943
Coordinates34.98056, -88.36917
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.6 US tons
Inventory rating41.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans300
Design loadHS 20
Structure length92 ft (28 m)
Longest span30 ft (9 m)
Deck width33 ft (10 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,205 (2024)
Projected traffic2,550 by 2043
Trucks8%
Lanes on structure20
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$279,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 100 over Chambers Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is CR 100 over Chambers 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 August 2024.

How much traffic does CR 100 over Chambers Creek carry?

About 1,205 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is CR 100 over Chambers Creek?

The structure is 92 ft (28 m) long with a longest span of 30 ft (9 m) and a deck 33 ft wide.

Who owns CR 100 over Chambers Creek?

It is owned by the County Highway Agency.