US Bridges

FM over Hog Branch

PoorPosted for load

Taylor County, Iowa · 069320804 · Structure no. 000000000322321

Built
1975
50 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
390
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Hog Branch is a steel stringer/multi-beam or girder carrying FM over Hog Branch in Taylor County, Iowa. It was built in 1975, so it is 50 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 390 vehicles a day, roughly 14% of them trucks, projected to reach 390 by 2043. The structure is 42 ft (12.8 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM
CrossesHog Branch
Location069320804
RouteCounty Highway 0
CountyTaylor County
StateIowa
Coordinates40.78867, -94.56634
Functional classRural Major Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36.4 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length42 ft (12.8 m)
Longest span41 ft (12.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic390 (2021)
Projected traffic390 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$693,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Hog Branch built?

It was built in 1975, making it 50 years old in 2025.

What condition is FM over Hog Branch 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 May 2023.

How much traffic does FM over Hog Branch carry?

About 390 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is FM over Hog Branch?

The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 30 ft wide.

Who owns FM over Hog Branch?

It is owned by the County Highway Agency.