CO.RD.20 over Mortar Creek

Good

Autauga County, Alabama · 1/2 MI W of I-65 · Structure no. 013294

Built: 1984; 41 years old
Condition: Good; inspected January 2024
Type: Culvert; Concrete
Length: 54 ft; 5 main spans
Daily traffic: 338; 2004 count
Owner: County; County Highway Agency

About this bridge

CO.RD.20 over Mortar Creek is a concrete culvert carrying CO.RD.20 over Mortar Creek in Autauga County, Alabama. It was built in 1984, so it is 41 years old, younger than the Alabama average of 51.1 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 338 vehicles a day, roughly 10% of them trucks, projected to reach 559 by 2029. The structure is 54 ft (16.5 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCO.RD.20

CrossesMortar Creek

Location1/2 MI W of I-65

RouteCounty Highway 20

CountyAutauga County

StateAlabama

Coordinates32.67184, -86.51547

Functional classRural Major Collector

Condition and inspection

Good

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

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	7 Good	Some minor problems.

Last inspectionJanuary 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating43.7 US tons

Inventory rating26.2 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckConcrete, cast-in-place

Main spans5

Design loadH 15

Structure length54 ft (16.5 m)

Longest span10 ft (3 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic338 (2004)

Projected traffic559 by 2029

Trucks10%

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

OwnerCounty Highway Agency

Maintained byCounty Highway Agency

Historic statusNot eligible for the National Register of Historic Places

Work proposedRehabilitation because of general structure deterioration or inadequate strength

Estimated improvement cost$475,000 (2025 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was CO.RD.20 over Mortar Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is CO.RD.20 over Mortar Creek 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 January 2024.

How much traffic does CO.RD.20 over Mortar Creek carry?

About 338 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is CO.RD.20 over Mortar Creek?

The structure is 54 ft (16.5 m) long with a longest span of 10 ft (3 m).

Who owns CO.RD.20 over Mortar Creek?

It is owned by the County Highway Agency.