US Bridges

Mt Auburn RD over Paper Mill Branch

Fair

Christian County, Illinois · 3.2M N IL29 Taylorvi · Structure no. 011002900000000

Built
1933
92 years old, rebuilt 1987
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
60 ft
2 main spans
Daily traffic
950
2021 count
Owner
State
State Highway Agency

About this bridge

Mt Auburn RD over Paper Mill Branch is a concrete slab carrying Mt Auburn RD over Paper Mill Branch in Christian County, Illinois. It was built in 1933 and reconstructed in 1987, so it is 92 years old, older than the Illinois average of 45.3 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 950 vehicles a day, roughly 5% of them trucks, projected to reach 960 by 2046. The structure is 60 ft (18.4 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesMt Auburn RD
CrossesPaper Mill Branch
Location3.2M N IL29 Taylorvi
RouteCounty Highway 0
CountyChristian County
StateIllinois
Coordinates39.60538, -89.29814
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length60 ft (18.4 m)
Longest span28 ft (8.4 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2021)
Projected traffic960 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Auburn RD over Paper Mill Branch built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1987.

What condition is Mt Auburn RD over Paper Mill Branch 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 August 2023.

How much traffic does Mt Auburn RD over Paper Mill Branch carry?

About 950 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Mt Auburn RD over Paper Mill Branch?

The structure is 60 ft (18.4 m) long with a longest span of 28 ft (8.4 m) and a deck 32 ft wide.

Who owns Mt Auburn RD over Paper Mill Branch?

It is owned by the State Highway Agency.