US Bridges

Mager LN over Cottonwood Creek

Fair

Williamson County, Texas · 0.1 MI E of FM 1660 · Structure no. 142460L01420001

Built
1990
35 years old, rebuilt 2013
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
87 ft
7 main spans
Daily traffic
2,033
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mager LN over Cottonwood Creek is a concrete culvert carrying Mager LN over Cottonwood Creek in Williamson County, Texas. It was built in 1990 and reconstructed in 2013, so it is 35 years old, younger than the Texas average of 44.4 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 2,033 vehicles a day, roughly 1% of them trucks, projected to reach 3,440 by 2030. The structure is 87 ft (26.5 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMager LN
CrossesCottonwood Creek
Location0.1 MI E of FM 1660
RouteCounty Highway 136
CountyWilliamson County
StateTexas
Coordinates30.55141, -97.54251
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,033 (2020)
Projected traffic3,440 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mager LN over Cottonwood Creek built?

It was built in 1990, making it 35 years old in 2025. It was reconstructed in 2013.

What condition is Mager LN over Cottonwood 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 October 2023.

How much traffic does Mager LN over Cottonwood Creek carry?

About 2,033 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Mager LN over Cottonwood Creek?

The structure is 87 ft (26.5 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns Mager LN over Cottonwood Creek?

It is owned by the City or Municipal Highway Agency.