US Bridges

N. Allen St. over Shilcotts Bayou

Good

Pulaski County, Arkansas · .1 MI N 41st&SH 176 · Structure no. 000000000019770

Built
1970
55 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
4,000
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

N. Allen St. over Shilcotts Bayou is a concrete culvert carrying N. Allen St. over Shilcotts Bayou in Pulaski County, Arkansas. It was built in 1970, so it is 55 years old, older than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,000 vehicles a day, roughly 1% of them trucks, projected to reach 194 by 2007. The structure is 29 ft (8.9 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesN. Allen St.
CrossesShilcotts Bayou
Location.1 MI N 41st&SH 176
RouteCity Street 950
CountyPulaski County
StateArkansas
Coordinates34.79427, -92.27339
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.9 m)
Longest span13 ft (4 m)
Deck width51 ft (15.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2018)
Projected traffic194 by 2007
Trucks1%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 N. Allen St. over Shilcotts Bayou built?

It was built in 1970, making it 55 years old in 2025.

What condition is N. Allen St. over Shilcotts Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does N. Allen St. over Shilcotts Bayou carry?

About 4,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is N. Allen St. over Shilcotts Bayou?

The structure is 29 ft (8.9 m) long with a longest span of 13 ft (4 m) and a deck 51 ft wide.

Who owns N. Allen St. over Shilcotts Bayou?

It is owned by the City or Municipal Highway Agency.