US Bridges

FM 1623 over Mckinney Creek

Fair

Blanco County, Texas · 3.6 MI W of US 281 · Structure no. 140160153401004

Built
1956
69 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
35 ft
3 main spans
Daily traffic
3,065
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1623 over Mckinney Creek is a concrete culvert carrying FM 1623 over Mckinney Creek in Blanco County, Texas. It was built in 1956, so it is 69 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 3,065 vehicles a day, roughly 12% of them trucks, projected to reach 2,780 by 2033. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesFM 1623
CrossesMckinney Creek
Location3.6 MI W of US 281
RouteState Highway 1623
CountyBlanco County
StateTexas
Coordinates30.10671, -98.47806
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadOther
Structure length35 ft (10.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,065 (2020)
Projected traffic2,780 by 2033
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

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$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1623 over Mckinney Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is FM 1623 over Mckinney 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 April 2023.

How much traffic does FM 1623 over Mckinney Creek carry?

About 3,065 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is FM 1623 over Mckinney Creek?

The structure is 35 ft (10.7 m) long with a longest span of 10 ft (3 m).

Who owns FM 1623 over Mckinney Creek?

It is owned by the State Highway Agency.