US Bridges

County Line Road over Alligator Creek Trib

FairPosted for load

McLennan County, Texas · 1.55 MI SW of IH 35 · Structure no. 091610AA0460001

Built
1970
55 years old
Condition
Fair
inspected April 2024
Type
Other
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
62
2020 count
Owner
County
County Highway Agency

About this bridge

County Line Road over Alligator Creek Trib is a prestressed concrete other carrying County Line Road over Alligator Creek Trib in McLennan County, Texas. It was built in 1970, so it is 55 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 62 vehicles a day, projected to reach 75 by 2036. The structure is 32 ft (9.8 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Line Road
CrossesAlligator Creek Trib
Location1.55 MI SW of IH 35
RouteCounty Highway 0
CountyMcLennan County
StateTexas
Coordinates31.82626, -97.11333
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating24 US tons

Structure

Structure typeOther
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62 (2020)
Projected traffic75 by 2036
Trucks0%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$208,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Line Road over Alligator Creek Trib built?

It was built in 1970, making it 55 years old in 2025.

What condition is County Line Road over Alligator Creek Trib 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 2024.

How much traffic does County Line Road over Alligator Creek Trib carry?

About 62 vehicles per day (2020 count).

How long is County Line Road over Alligator Creek Trib?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns County Line Road over Alligator Creek Trib?

It is owned by the County Highway Agency.