US Bridges

Local over Unnamed Stream

Fair

Keokuk County, Iowa · 075133403 · Structure no. 000000000211150

Built
1967
58 years old, rebuilt 1983
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
34
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Unnamed Stream is a prestressed concrete tee beam carrying Local over Unnamed Stream in Keokuk County, Iowa. It was built in 1967 and reconstructed in 1983, so it is 58 years old, older than the Iowa average of 45.5 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 34 vehicles a day, projected to reach 34 by 2044. The structure is 24 ft (7.3 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLocal
CrossesUnnamed Stream
Location075133403
RouteCounty Highway 0
CountyKeokuk County
StateIowa
Coordinates41.25725, -92.35294
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89.6 US tons
Inventory rating61 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)
Projected traffic34 by 2044
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$323,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Unnamed Stream built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1983.

What condition is Local over Unnamed Stream 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 2024.

How much traffic does Local over Unnamed Stream carry?

About 34 vehicles per day (2022 count).

How long is Local over Unnamed Stream?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 20 ft wide.

Who owns Local over Unnamed Stream?

It is owned by the County Highway Agency.