US Bridges

CR-621/Z-B/L-0.22 over Alligator Bayou

Fair

Lee County, Arkansas · .2 Miles North of SH 131 · Structure no. 000000000018090

Built
1950
75 years old, rebuilt 1984
Condition
Fair
inspected July 2023
Type
Other
Steel
Length
44 ft
1 main span
Daily traffic
108
2018 count
Owner
County
County Highway Agency

About this bridge

CR-621/Z-B/L-0.22 over Alligator Bayou is a steel other carrying CR-621/Z-B/L-0.22 over Alligator Bayou in Lee County, Arkansas. It was built in 1950 and reconstructed in 1984, so it is 75 years old, older than the Arkansas average of 45.1 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 108 vehicles a day, roughly 1% of them trucks, projected to reach 161 by 2007. The structure is 44 ft (13.4 m) long and 18 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesCR-621/Z-B/L-0.22
CrossesAlligator Bayou
Location.2 Miles North of SH 131
RouteCounty Highway 621
CountyLee County
StateArkansas
Coordinates34.82954, -90.49809
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeOther
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span28 ft (8.4 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108 (2018)
Projected traffic161 by 2007
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$235,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR-621/Z-B/L-0.22 over Alligator Bayou built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1984.

What condition is CR-621/Z-B/L-0.22 over Alligator Bayou 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 July 2023.

How much traffic does CR-621/Z-B/L-0.22 over Alligator Bayou carry?

About 108 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is CR-621/Z-B/L-0.22 over Alligator Bayou?

The structure is 44 ft (13.4 m) long with a longest span of 28 ft (8.4 m) and a deck 18 ft wide.

Who owns CR-621/Z-B/L-0.22 over Alligator Bayou?

It is owned by the County Highway Agency.