US Bridges

Tillman Mill RD over Big CR

Fair

Limestone County, Alabama · SEC21 T2S R5W · Structure no. 008783

Built
1965
60 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
60 ft
4 main spans
Daily traffic
940
2009 count
Owner
County
County Highway Agency

About this bridge

Tillman Mill RD over Big CR is a concrete culvert carrying Tillman Mill RD over Big CR in Limestone County, Alabama. It was built in 1965, so it is 60 years old, older than the Alabama average of 51.1 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 940 vehicles a day, roughly 5% of them trucks, projected to reach 1,400 by 2029. The structure is 60 ft (18.3 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesTillman Mill RD
CrossesBig CR
LocationSEC21 T2S R5W
RouteCounty Highway 43
CountyLimestone County
StateAlabama
Coordinates34.85141, -87.05344
Functional classRural Minor 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length60 ft (18.3 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic940 (2009)
Projected traffic1,400 by 2029
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost$889,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tillman Mill RD over Big CR built?

It was built in 1965, making it 60 years old in 2025.

What condition is Tillman Mill RD over Big CR 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 March 2023.

How much traffic does Tillman Mill RD over Big CR carry?

About 940 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Tillman Mill RD over Big CR?

The structure is 60 ft (18.3 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Tillman Mill RD over Big CR?

It is owned by the County Highway Agency.