US Bridges

CO 10 over Knokes Creek

PoorPosted for load

Cleburne County, Alabama · CO 10 Knokes Creek · Structure no. 004028

Built
1951
74 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
725
2008 count
Owner
County
County Highway Agency

About this bridge

CO 10 over Knokes Creek is a steel stringer/multi-beam or girder carrying CO 10 over Knokes Creek in Cleburne County, Alabama. It was built in 1951, so it is 74 years old, older than the Alabama average of 51.1 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 725 vehicles a day, roughly 9% of them trucks, projected to reach 1,000 by 2035. The structure is 33 ft (10.1 m) long and 22 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesCO 10
CrossesKnokes Creek
LocationCO 10 Knokes Creek
RouteCounty Highway 10
CountyCleburne County
StateAlabama
Coordinates33.52327, -85.40836
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating12 US tons
Inventory rating11 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length33 ft (10.1 m)
Longest span31 ft (9.4 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic725 (2008)
Projected traffic1,000 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$278,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO 10 over Knokes Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is CO 10 over Knokes Creek 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 July 2023.

How much traffic does CO 10 over Knokes Creek carry?

About 725 vehicles per day (2008 count), of which roughly 9% are trucks.

How long is CO 10 over Knokes Creek?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 22 ft wide.

Who owns CO 10 over Knokes Creek?

It is owned by the County Highway Agency.