US Bridges

SR 99 over Elk River Relief

Fair

Limestone County, Alabama · 9.1 M N JCT SR99 & SR127 · Structure no. 007473

Built
1961
64 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
408 ft
12 main spans
Daily traffic
3,260
2024 count
Owner
State
State Highway Agency

About this bridge

SR 99 over Elk River Relief is a concrete tee beam carrying SR 99 over Elk River Relief in Limestone County, Alabama. It was built in 1961, so it is 64 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 3,260 vehicles a day, roughly 4% of them trucks, projected to reach 4,391 by 2033. The structure is 408 ft (124.4 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 99
CrossesElk River Relief
Location9.1 M N JCT SR99 & SR127
RouteState Highway 99
CountyLimestone County
StateAlabama
Coordinates34.8975, -87.083
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.4 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length408 ft (124.4 m)
Longest span34 ft (10.4 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,260 (2024)
Projected traffic4,391 by 2033
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 99 over Elk River Relief built?

It was built in 1961, making it 64 years old in 2025.

What condition is SR 99 over Elk River Relief 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 Elk River Relief carry?

About 3,260 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR 99 over Elk River Relief?

The structure is 408 ft (124.4 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.

Who owns SR 99 over Elk River Relief?

It is owned by the State Highway Agency.