US Bridges

SR 99 over Big Creek

Fair

Limestone County, Alabama · 4.9 MI N JCT SR99 & SR127 · Structure no. 011043

Built
1947
78 years old, rebuilt 1974
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
3 main spans
Daily traffic
6,250
2024 count
Owner
State
State Highway Agency

About this bridge

SR 99 over Big Creek is a steel stringer/multi-beam or girder carrying SR 99 over Big Creek in Limestone County, Alabama. It was built in 1947 and reconstructed in 1974, so it is 78 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 5 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 6,250 vehicles a day, roughly 4% of them trucks, projected to reach 8,418 by 2033. The structure is 60 ft (18.3 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 99
CrossesBig Creek
Location4.9 MI N JCT SR99 & SR127
RouteState Highway 99
CountyLimestone County
StateAlabama
Coordinates34.85167, -87.04167
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.9 US tons
Inventory rating30.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length60 ft (18.3 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,250 (2024)
Projected traffic8,418 by 2033
Trucks4%
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

OwnerState Highway Agency
Maintained byState 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$614,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 99 over Big Creek built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1974.

What condition is SR 99 over Big Creek 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 June 2024.

How much traffic does SR 99 over Big Creek carry?

About 6,250 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR 99 over Big Creek?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns SR 99 over Big Creek?

It is owned by the State Highway Agency.