US Bridges

Local over Branch Flank Creek

PoorPosted for load

Warren County, Iowa · 074221002 · Structure no. 000000000332650

Built
1965
60 years old
Condition
Poor
inspected September 2024
Type
Truss - Thru
Steel
Length
137 ft
1 main span
Daily traffic
46
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Branch Flank Creek is a steel truss - thru carrying Local over Branch Flank Creek in Warren County, Iowa. It was built in 1965, so it is 60 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 46 vehicles a day, roughly 24% of them trucks, projected to reach 46 by 2044. The structure is 137 ft (41.8 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLocal
CrossesBranch Flank Creek
Location074221002
RouteCounty Highway 0
StateIowa
Coordinates41.23033, -93.38565
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating29 US tons
Inventory rating16 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length137 ft (41.8 m)
Longest span70 ft (21.3 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46 (2022)
Projected traffic46 by 2044
Trucks24%
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$1.7 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Branch Flank Creek built?

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

What condition is Local over Branch Flank Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Local over Branch Flank Creek carry?

About 46 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is Local over Branch Flank Creek?

The structure is 137 ft (41.8 m) long with a longest span of 70 ft (21.3 m) and a deck 21 ft wide.

Who owns Local over Branch Flank Creek?

It is owned by the County Highway Agency.