US Bridges

US 183 over Hamilton Branch

Fair

Williamson County, Texas · 0.05 MI S of FM 1869 · Structure no. 142460027304010

Built
1939
86 years old, rebuilt 2016
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
52 ft
4 main spans
Daily traffic
19,394
2021 count
Owner
State
State Highway Agency

About this bridge

US 183 over Hamilton Branch is a concrete culvert carrying US 183 over Hamilton Branch in Williamson County, Texas. It was built in 1939 and reconstructed in 2016, so it is 86 years old, older 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 19,394 vehicles a day, roughly 8% of them trucks, projected to reach 27,152 by 2041. The structure is 52 ft (15.9 m) long and 78 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesUS 183
CrossesHamilton Branch
Location0.05 MI S of FM 1869
RouteU.S. Route 183
CountyWilliamson County
StateTexas
Coordinates30.68819, -97.87898
Functional classRural Principal Arterial - Other

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length52 ft (15.9 m)
Longest span11 ft (3.4 m)
Deck width78 ft (23.9 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,394 (2021)
Projected traffic27,152 by 2041
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$6,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 183 over Hamilton Branch built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2016.

What condition is US 183 over Hamilton 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 January 2025.

How much traffic does US 183 over Hamilton Branch carry?

About 19,394 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is US 183 over Hamilton Branch?

The structure is 52 ft (15.9 m) long with a longest span of 11 ft (3.4 m) and a deck 78 ft wide.

Who owns US 183 over Hamilton Branch?

It is owned by the State Highway Agency.