US Bridges

SH-17/SEC-1/L6.21 over Prairie Cypress

Fair

Monroe County, Arkansas · 6.2 Miles NW of SH 1 · Structure no. 0000000000M0464

Built
1954
71 years old
Condition
Fair
inspected January 2025
Type
Channel Beam
Concrete
Length
45 ft
3 main spans
Daily traffic
220
2019 count
Owner
State
State Highway Agency

About this bridge

SH-17/SEC-1/L6.21 over Prairie Cypress is a concrete channel beam carrying SH-17/SEC-1/L6.21 over Prairie Cypress in Monroe County, Arkansas. It was built in 1954, so it is 71 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 220 vehicles a day, roughly 1% of them trucks, projected to reach 460 by 2028. The structure is 45 ft (13.7 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSH-17/SEC-1/L6.21
CrossesPrairie Cypress
Location6.2 Miles NW of SH 1
RouteState Highway 17
CountyMonroe County
StateArkansas
Coordinates34.49387, -91.12761
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span15 ft (4.6 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2019)
Projected traffic460 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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-17/SEC-1/L6.21 over Prairie Cypress built?

It was built in 1954, making it 71 years old in 2025.

What condition is SH-17/SEC-1/L6.21 over Prairie Cypress 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 January 2025.

How much traffic does SH-17/SEC-1/L6.21 over Prairie Cypress carry?

About 220 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is SH-17/SEC-1/L6.21 over Prairie Cypress?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 25 ft wide.

Who owns SH-17/SEC-1/L6.21 over Prairie Cypress?

It is owned by the State Highway Agency.