US Bridges

FM over Bull Run

Good

Plymouth County, Iowa · 092473201 · Structure no. 000000000275471

Built
1995
30 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
113 ft
3 main spans
Daily traffic
838
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Bull Run is a concrete continuous slab carrying FM over Bull Run in Plymouth County, Iowa. It was built in 1995, so it is 30 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 838 vehicles a day, roughly 24% of them trucks, projected to reach 838 by 2043. The structure is 113 ft (34.4 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesBull Run
Location092473201
RouteCounty Highway 0
StateIowa
Coordinates42.74993, -96.41319
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.9 US tons
Inventory rating55.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length113 ft (34.4 m)
Longest span44 ft (13.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic838 (2022)
Projected traffic838 by 2043
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$495,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Bull Run built?

It was built in 1995, making it 30 years old in 2025.

What condition is FM over Bull Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does FM over Bull Run carry?

About 838 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is FM over Bull Run?

The structure is 113 ft (34.4 m) long with a longest span of 44 ft (13.4 m) and a deck 33 ft wide.

Who owns FM over Bull Run?

It is owned by the County Highway Agency.