US Bridges

SR 21 over Mill Creek

Fair

Monroe County, Alabama · Peterman · Structure no. 010013

Built
1969
56 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
2,080
2013 count
Owner
State
State Highway Agency

About this bridge

SR 21 over Mill Creek is a concrete culvert carrying SR 21 over Mill Creek in Monroe County, Alabama. It was built in 1969, so it is 56 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 2,080 vehicles a day, roughly 24% of them trucks, projected to reach 2,594 by 2033. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 21
CrossesMill Creek
LocationPeterman
RouteState Highway 21
CountyMonroe County
StateAlabama
Coordinates31.5811, -87.27002
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating98 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length45 ft (13.7 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,080 (2013)
Projected traffic2,594 by 2033
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost$1.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 21 over Mill Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR 21 over Mill 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 October 2023.

How much traffic does SR 21 over Mill Creek carry?

About 2,080 vehicles per day (2013 count), of which roughly 24% are trucks.

How long is SR 21 over Mill Creek?

The structure is 45 ft (13.7 m) long with a longest span of 12 ft (3.7 m).

Who owns SR 21 over Mill Creek?

It is owned by the State Highway Agency.