US Bridges

SH-50/SEC-1/L13.54 over Blackfish Bayou

PoorPosted for load

St. Francis County, Arkansas · 1.4 MI W JCT SH 149 & 50 · Structure no. 0000000000M3331

Built
1972
53 years old
Condition
Poor
inspected March 2024
Type
Channel Beam
Concrete
Length
190 ft
10 main spans
Daily traffic
80
2019 count
Owner
State
State Highway Agency

About this bridge

SH-50/SEC-1/L13.54 over Blackfish Bayou is a concrete channel beam carrying SH-50/SEC-1/L13.54 over Blackfish Bayou in St. Francis County, Arkansas. It was built in 1972, so it is 53 years old, older than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 80 vehicles a day, roughly 7% of them trucks, projected to reach 85 by 2028. The structure is 190 ft (57.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH-50/SEC-1/L13.54
CrossesBlackfish Bayou
Location1.4 MI W JCT SH 149 & 50
RouteState Highway 50
Coordinates35.02189, -90.52052
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating18 US tons
Inventory rating11 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans10
Design loadUnknown
Structure length190 ft (57.9 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2019)
Projected traffic85 by 2028
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH-50/SEC-1/L13.54 over Blackfish Bayou built?

It was built in 1972, making it 53 years old in 2025.

What condition is SH-50/SEC-1/L13.54 over Blackfish Bayou in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does SH-50/SEC-1/L13.54 over Blackfish Bayou carry?

About 80 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is SH-50/SEC-1/L13.54 over Blackfish Bayou?

The structure is 190 ft (57.9 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns SH-50/SEC-1/L13.54 over Blackfish Bayou?

It is owned by the State Highway Agency.