Allens Grove RD over Br Mud Creek

Fair

Scott County, Iowa · 080E23408 · Structure no. 000000000303391

Built: 1993; 32 years old
Condition: Fair; inspected April 2023
Type: Slab; Concrete Continuous
Length: 103 ft; 3 main spans
Daily traffic: 130; 2022 count
Owner: County; County Highway Agency

About this bridge

Allens Grove RD over Br Mud Creek is a concrete continuous slab carrying Allens Grove RD over Br Mud Creek in Scott County, Iowa. It was built in 1993, so it is 32 years old, younger 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 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 130 vehicles a day, projected to reach 130 by 2043. The structure is 103 ft (31.4 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesAllens Grove RD

CrossesBr Mud Creek

Location080E23408

RouteCounty Highway 0

CountyScott County

StateIowa

Coordinates41.69388, -90.70876

Functional classRural Minor Collector

Condition and inspection

Fair

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

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionApril 2023

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating88.6 US tons

Inventory rating53.1 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length103 ft (31.4 m)

Longest span39 ft (11.9 m)

Deck width32 ft (9.8 m)

Roadway width30 ft (9.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2022)

Projected traffic130 by 2043

Trucks0%

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 proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was Allens Grove RD over Br Mud Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is Allens Grove RD over Br Mud 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 April 2023.

How much traffic does Allens Grove RD over Br Mud Creek carry?

About 130 vehicles per day (2022 count).

How long is Allens Grove RD over Br Mud Creek?

The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 32 ft wide.

Who owns Allens Grove RD over Br Mud Creek?

It is owned by the County Highway Agency.