US Bridges

CR-508/Z-C/L-2.38 over Blackfish Bayou

FairPosted for load

St. Francis County, Arkansas · 0.6 M W CO RD 39 & SH 149 · Structure no. 000000000017015

Built
1980
45 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
262 ft
5 main spans
Daily traffic
20
2018 count
Owner
County
County Highway Agency

About this bridge

CR-508/Z-C/L-2.38 over Blackfish Bayou is a steel stringer/multi-beam or girder carrying CR-508/Z-C/L-2.38 over Blackfish Bayou in St. Francis County, Arkansas. It was built in 1980, so it is 45 years old, younger 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 5 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 20 vehicles a day, roughly 5% of them trucks, projected to reach 50 by 2007. The structure is 262 ft (80 m) long and 18 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCR-508/Z-C/L-2.38
CrossesBlackfish Bayou
Location0.6 M W CO RD 39 & SH 149
RouteCounty Highway 508
CountySt. Francis County
StateArkansas
Coordinates35.0765, -90.50346
Functional classRural Minor 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length262 ft (80 m)
Longest span52 ft (15.8 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2018)
Projected traffic50 by 2007
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$556,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR-508/Z-C/L-2.38 over Blackfish Bayou built?

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

What condition is CR-508/Z-C/L-2.38 over Blackfish 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 October 2024.

How much traffic does CR-508/Z-C/L-2.38 over Blackfish Bayou carry?

About 20 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is CR-508/Z-C/L-2.38 over Blackfish Bayou?

The structure is 262 ft (80 m) long with a longest span of 52 ft (15.8 m) and a deck 18 ft wide.

Who owns CR-508/Z-C/L-2.38 over Blackfish Bayou?

It is owned by the County Highway Agency.