US Bridges

E. 13th ST over Mud Ck

PoorPosted for load

Benton County, Iowa · 085102200 · Structure no. 000000000072620

Built
1965
60 years old
Condition
Poor
inspected April 2024
Type
Slab
Wood or Timber
Length
58 ft
3 main spans
Daily traffic
60
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

E. 13th ST over Mud Ck is a wood or timber slab carrying E. 13th ST over Mud Ck in Benton 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 3 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 60 vehicles a day, roughly 12% of them trucks, projected to reach 60 by 2044. The structure is 58 ft (17.7 m) long and 17 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesE. 13th ST
CrossesMud Ck
Location085102200
RouteCity Street 0
StateIowa
Coordinates42.15933, -92.00249
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating6.6 US tons
Inventory rating0 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width17 ft (5.2 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2021)
Projected traffic60 by 2044
Trucks12%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was E. 13th ST over Mud Ck built?

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

What condition is E. 13th ST over Mud Ck 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 April 2024.

How much traffic does E. 13th ST over Mud Ck carry?

About 60 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is E. 13th ST over Mud Ck?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 17 ft wide.

Who owns E. 13th ST over Mud Ck?

It is owned by the City or Municipal Highway Agency.